Q: What is the negative version of the number 18,405,809?
A: -18,405,809
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:
| 18,405,807 | 18,405,808 | 18,405,810 | 18,405,811 |
| -18,405,807 | -18,405,808 | -18,405,810 | -18,405,811 |