818
818 is the ISO 3166-1 numeric country code for Egypt.
- Even
- Composite
Where 818 fits
Why 818 is special
Egypt spans two continents, which several international classification systems handle differently. The numeric code identifies the state and leaves the continental question to whoever is asking.
818 is part of
Factors & digit properties
- Divisors (4)
- 1, 2, 409, 818
- Prime factorisation
- 2 × 409
- Digit sum
- 17
- Digital root
- 8
Representations
- Decimal
- 818
- Binary
- 1100110010
- Octal
- 1462
- Hexadecimal
- 332
- Roman numeral
- DCCCXVIII
- Scientific notation
- 8.180 × 10^2
Other mathematical patterns
- Palindromic number
- Deficient number
- Happy number
- Semiprime
Related numbers & connections
Egypt's ISO numeric code and calling code. Classification systems disagree about whether Egypt is African or Asian; both identifiers are silent on it.
View 20 →Other connections
- is associated with20
why?
Strength 0.50, confidence "high".
Geography
818 is Egypt's ISO numeric code. Statistical systems disagree about whether Egypt is African or Asian, and the code is silent on it — identity and classification are deliberately separate.
DocumentedGeographyGeography: Egypt
Common questions
Is 818 a prime number?
No, 818 is not prime.
What are the factors of 818?
The factors of 818 are 1, 2, 409, 818.
What is 818 in Roman numerals?
818 in Roman numerals is DCCCXVIII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026