18164056 has 8 divisors (see below), whose sum is σ = 34057620. Its totient is φ = 9082024.

The previous prime is 18164053. The next prime is 18164093. The reversal of 18164056 is 65046181.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×18164056² = 659865860742272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18164053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135246 + ... + 1135261.

Almost surely, 2^18164056 is an apocalyptic number.

It is an amenable number.

18164056 is a deficient number, since it is larger than the sum of its proper divisors (15893564).

18164056 is a wasteful number, since it uses less digits than its factorization.

18164056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270513 (or 2270509 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 18164056 is about 4261.9310177430. The cubic root of 18164056 is about 262.8679333270.

The spelling of 18164056 in words is "eighteen million, one hundred sixty-four thousand, fifty-six".