18365056 has 16 divisors (see below), whose sum is σ = 36586890. Its totient is φ = 9182464.

The previous prime is 18365041. The next prime is 18365057. The reversal of 18365056 is 65056381.

It can be written as a sum of positive squares in only one way, i.e., 18318400 + 46656 = 4280^2 + 216^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18365057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71611 + ... + 71866.

Almost surely, 2^18365056 is an apocalyptic number.

18365056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18365056 is a deficient number, since it is larger than the sum of its proper divisors (18221834).

18365056 is an equidigital number, since it uses as much as digits as its factorization.

18365056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143491 (or 143479 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 18365056 is about 4285.4470011890. The cubic root of 18365056 is about 263.8339941972.

The spelling of 18365056 in words is "eighteen million, three hundred sixty-five thousand, fifty-six".