18162956 has 12 divisors (see below), whose sum is σ = 36325968. Its totient is φ = 7784112.

The previous prime is 18162923. The next prime is 18162971. The reversal of 18162956 is 65926181.

18162956 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324311 + ... + 324366.

It is an arithmetic number, because the mean of its divisors is an integer number (3027164).

Almost surely, 2^18162956 is an apocalyptic number.

It is an amenable number.

18162956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18162956 is a wasteful number, since it uses less digits than its factorization.

18162956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648688 (or 648686 counting only the distinct ones).

The product of its digits is 25920, while the sum is 38.

The square root of 18162956 is about 4261.8019663049. The cubic root of 18162956 is about 262.8626268660.

The spelling of 18162956 in words is "eighteen million, one hundred sixty-two thousand, nine hundred fifty-six".