Is 162 a prime number?

No, 162 is composite. It is divisible by 2, 3, 6, 9, 18, 27, 54 and 81.

Factors of 162

The factors of 162 are 1, 2, 3, 6, 9, 18, 27, 54, 81 and 162. That is 10 factors in total.

A factor of 162 is a whole number that divides 162 exactly, with no remainder. 162 is a composite number because it has factors other than 1 and itself.

Factor pairs of 162

Two numbers that multiply to give 162:

1 × 162 = 162
2 × 81 = 162
3 × 54 = 162
6 × 27 = 162
9 × 18 = 162

Prime factorization of 162

162 = 2 × 3 × 3 × 3 × 3 = 2 × 3⁴. The prime factors of 162 are 2 and 3.

Quick facts about 162

Is 162 prime? No.
Even or odd: even.
Sum of its factors: 1 + 2 + 3 + 6 + 9 + 18 + 27 + 54 + 81 + 162 = 363.

Factors of nearby numbers

Number	Factors
158	1, 2, 79, 158
159	1, 3, 53, 159
160	1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160
161	1, 7, 23, 161
163	1, 163
164	1, 2, 4, 41, 82, 164
165	1, 3, 5, 11, 15, 33, 55, 165
166	1, 2, 83, 166

More about 162: square root of 162 · 162 in binary.

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