18364 has 6 divisors (see below), whose sum is σ = 32144. Its totient is φ = 9180.

The previous prime is 18353. The next prime is 18367. The reversal of 18364 is 46381.

It is a plaindrome in base 14 and base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2292 + ... + 2299.

2¹⁸³⁶⁴ is an apocalyptic number.

It is an amenable number.

18364 is a deficient number, since it is larger than the sum of its proper divisors (13780).

18364 is a wasteful number, since it uses less digits than its factorization.

18364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4595 (or 4593 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 18364 is about 135.5138369319. The cubic root of 18364 is about 26.3828937238.

The spelling of 18364 in words is "eighteen thousand, three hundred sixty-four".