189 (number)

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List of numbers — Integers

<< 180 181 182 183 184 185 186 187 188 189 >>

Cardinal One hundred [and]
eighty-nine
Ordinal 189th
Factorization [ 3^3 \cdot 7 ]
Roman numeral CLXXXIX
Binary 10111101
Hexadecimal BD

189 is the natural number following 188 and preceding 190.

If cubes of negative numbers are allowed, then 189 is the smallest positive integer that can be expressed as a sum of two cubes in two different ways: 6³ + (-3)³ = 4³ + 5³ = 189. (If the negative numbers are disallowed, then the smallest such number is 1729.

189 is a centered cube number.

Uses

The year 189

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