Q: What is the negative version of the number 638,438,688?
A: -638,438,688
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:
| 638,438,686 | 638,438,687 | 638,438,689 | 638,438,690 |
| -638,438,686 | -638,438,687 | -638,438,689 | -638,438,690 |