18645056 has 28 divisors (see below), whose sum is σ = 39177468. Its totient is φ = 8773632.

The previous prime is 18645047. The next prime is 18645059. The reversal of 18645056 is 65054681.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5569600 + 13075456 = 2360^2 + 3616^2 .

It is a super-2 number, since 2×18645056² = 695276226486272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18645059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7481 + ... + 9656.

Almost surely, 2^18645056 is an apocalyptic number.

18645056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18645056 is an abundant number, since it is smaller than the sum of its proper divisors (20532412).

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

18645056 is a wasteful number, since it uses less digits than its factorization.

18645056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17166 (or 17156 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 18645056 is about 4317.9921259771. The cubic root of 18645056 is about 265.1680718546.

The spelling of 18645056 in words is "eighteen million, six hundred forty-five thousand, fifty-six".