Sum of Digits of 18
ANSWER : 9
The sum of the digits in the number 18 is: 1 + 8 = 9
How to Calculate the Digit Sum of 18?
To find the sum of digits of a number, simply break it into individual digits and add them. For 18:
1 + 8 = 9
The digits of 18 are: 1, 8.
Their sum is: 9
Step-by-Step Digit Sum of 18
We split the number 18 into its individual digits: 1 + 8 = 9
Digit Positions in 18
| Position | Digit |
|---|---|
| 1 | 1 |
| 2 | 8 |
Length of 18
The number 18 has 2 digits.
Is 9 a Prime Number?
No, 9 is not a prime number.
Digit Sums in Other Bases
- Binary: 10010 → 2
- Octal: 22 → 4
- Hexadecimal: 12 → 3