18 (goma sha takwas ko sha takwas) alƙalami ne, tsakanin 17 da 19.

← 17 18 19 →
Cardinal goma sha takwas
Factorization (en) Fassara 2 × 32
Greek numeral ΙΗ´
Roman numeral XVIII
Binary 100102
Ternary 2003
Octal (en) Fassara 228
Duodecimal system (en) Fassara 1612
Hexadecimal (en) Fassara 1216