I was reading that the world has 46-47 million millionaires.
https://en.wikipedia.org/wiki/MillionaireTo be a millionaire by the definition I found do not count your home you job or your pension.
Count your investable wealth :
"There are multiple approaches to determining a person's status as a millionaire. One of the two most commonly used measurements is net worth, which counts the total value of all property owned by a household minus the household's debts. According to this definition, a household owning an $800k home, $50k of furnishings, two cars worth $60k, a $60k retirement savings account, $45k in mutual funds, and a $325k vacation home with a $250k mortgage, $40k in car loans, and $25k in credit card debt would be worth about $1,025,000; and every individual in this household would thus be a millionaire. However, according to the net financial assets measurement used for some specific applications (such as evaluating an investor's expected tolerance for risk for stockbroker ethics), equity in one's principal residence is excluded, as are lifestyle assets, such as the car and furniture. Therefore, the above example household would only have net financial assets of $115,000. Another term used is "net investable assets" or working capital. These practitioners may use the term "millionaire" to mean somebody who is free to invest a million units of currency through them as broker. For similar reasons, those who market goods, services and investments to HNWIs are careful to specify a net worth "not counting principal residence". At the end of 2011, there were around 5.1 million HNWIs in the United States,[9] while at the same time there were 11 million millionaires[10] in a total of 3.5 million millionaire households,[11] including those 5.1 million HNWIs"
So I am not there yet.
But if you have only 18 BTC = 1,026,000
My wife and I may get there 1 day.
Just stack your BTC. one day. 18 will not be needed only 9 coins will get you there. 9 x 115,000 = 1,035,000 That day is not far off. Just stack the BTC and Hodl.