I have 18 ones, 15 hundreds, 15 tens, 8 thousands and 11 hundred thousands, what nuber am i?

The answer is 1,109,668.

here is why:

18 + 1,500 is 1,518

1,518 + 150 is 1,668.

1,668 + 8,000 is 9,668

9,668 + 11,00,000 is 1,109,668

18 ones is 18. 15 hundreds is 1,500. 15 tens is 150. 8 thousands is 8,000. 11 hundred thousands is 1,100,000.