918 in Roman Numerals
918
C (subtracted)MXVIII
nine hundred eighteen
How CMXVIII is formed
| Place | Value | Symbols |
|---|---|---|
| Hundreds | 900 | C (subtracted)M |
| Tens | 10 | X |
| Units | 8 | VIII |
| Total | 918 | CMXVIII |
CMXVIII is written one place at a time, from the largest to the smallest: CM (900) + X (10) + VIII (8) = 918.
CM is the only subtraction: the C before the M takes away 100, so CM = 900.
Common mistakes
Wrong: DCCCCXVIII
Why isn't 918 written as DCCCCXVIII?
A symbol can't be repeated four times in a row. 900 is CM (1000 − 100), not DCCCC, so 918 is CMXVIII.
Wrong: CMXIIX
Why isn't 918 written as CMXIIX?
Only one smaller symbol can stand before a larger one, so IIX doesn't work. 8 is VIII (5 + 3), so 918 is CMXVIII.
Numbers near 918
Properties of 918
- Prime factors
- 2 × 3³ × 17
- Divisors
- 16 divisors1, 2, 3, 6 … 918
- Even or odd
- Even
- Prime number
- No
- Letters in CMXVIII
- 7
918,000 in Roman numerals
With a bar over it (vinculum), C̅M̅X̅V̅I̅I̅I̅ means 918 × 1,000 = 918,000. How Roman numerals work