18524 has 12 divisors (see below), whose sum is σ = 35448. Its totient is φ = 8400.

The previous prime is 18523. The next prime is 18539. The reversal of 18524 is 42581.

It is a junction number, because it is equal to n+sod(n) for n = 18496 and 18505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18521) 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, 167 + ... + 254.

It is an arithmetic number, because the mean of its divisors is an integer number (2954).

2¹⁸⁵²⁴ is an apocalyptic number.

It is an amenable number.

18524 is a deficient number, since it is larger than the sum of its proper divisors (16924).

18524 is a wasteful number, since it uses less digits than its factorization.

18524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 434 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 18524 is about 136.1029022468. The cubic root of 18524 is about 26.4592943348.

The spelling of 18524 in words is "eighteen thousand, five hundred twenty-four".