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160 = 255

• 160 can be written using four 4's:

See also 113.
160 has 12 divisors (see below), whose sum is σ = 378. Its totient is φ = 64.

The previous prime is 157. The next prime is 163. The reversal of 160 is 61.

160 is nontrivially palindromic in base 3, base 6 and base 15.

It is an interprime number because it is at equal distance from previous prime (157) and next prime (163).

It can be written as a sum of positive squares in only one way, i.e., 144 + 16 = 12^2 + 4^2 .

It is an ABA number since it can be written as A⋅BA, here for A=5, B=2.

It is a hoax number, since the sum of its digits (7) coincides with the sum of the digits of its distinct prime factors.

160 is an undulating number in base 6.

160 is a nontrivial repdigit in base 15.

It is a plaindrome in base 11, base 12 and base 15.

It is a nialpdrome in base 4, base 13, base 14, base 15 and base 16.

It is a zygodrome in base 4 and base 15.

It is a pernicious number, because its binary representation contains a prime number (2) of ones.

In principle, a polygon with 160 sides can be constructed with ruler and compass.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30 + ... + 34.

160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189).

160 is an abundant number, since it is smaller than the sum of its proper divisors (218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

160 is an equidigital number, since it uses as much as digits as its factorization.

160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 160 is about 12.6491106407. The cubic root of 160 is about 5.4288352332.

Subtracting from 160 its reverse (61), we obtain a palindrome (99).

The spelling of 160 in words is "one hundred sixty", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160