18364023 has 32 divisors (see below), whose sum is σ = 28486080. Its totient is φ = 11681280.

The previous prime is 18364019. The next prime is 18364033. The reversal of 18364023 is 32046381.

It is a happy number.

18364023 is a `hidden beast` number, since 18 + 3 + 640 + 2 + 3 = 666.

It is not a de Polignac number, because 18364023 - 2² = 18364019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18364033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58515 + ... + 58827.

It is an arithmetic number, because the mean of its divisors is an integer number (890190).

Almost surely, 2^18364023 is an apocalyptic number.

18364023 is a deficient number, since it is larger than the sum of its proper divisors (10122057).

18364023 is a wasteful number, since it uses less digits than its factorization.

18364023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 18364023 is about 4285.3264753108. The cubic root of 18364023 is about 263.8290473818.

The spelling of 18364023 in words is "eighteen million, three hundred sixty-four thousand, twenty-three".