18160956 has 48 divisors (see below), whose sum is σ = 51367680. Its totient is φ = 5502960.

The previous prime is 18160949. The next prime is 18160963. The reversal of 18160956 is 65906181.

It is an interprime number because it is at equal distance from previous prime (18160949) and next prime (18160963).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18160956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6456 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (1070160).

Almost surely, 2^18160956 is an apocalyptic number.

It is an amenable number.

18160956 is an abundant number, since it is smaller than the sum of its proper divisors (33206724).

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

18160956 is a wasteful number, since it uses less digits than its factorization.

18160956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15311 (or 15303 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 18160956 is about 4261.5673173141. The cubic root of 18160956 is about 262.8529782061.

The spelling of 18160956 in words is "eighteen million, one hundred sixty thousand, nine hundred fifty-six".