-198 is an even number.
-198 is a Harshad number, which means it is divisible by the sum of its digits (1 + 9 + 8 = 18, and -198 is divisible by 18).
In binary, -198 is represented as 1111111111111111111111111111111111111111111111111111111100111010.
In hex, -198 is represented as ffffffffffffff3a.