19 ones
19,000,000
19000000
19000000
You would write it as 19,000,000
It is: 19,000,000 = 19 million as a number
1.9x107
1900 190 + 19 -------- 2109
3.2 million of them, but you can write it without using any of them.
19,003,065
19,000,000 - 0.01
1,400,000