Q: What is the negative version of the number 13,218,639?
A: -13,218,639
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 13,218,637 | 13,218,638 | 13,218,640 | 13,218,641 |
| -13,218,637 | -13,218,638 | -13,218,640 | -13,218,641 |