18533132 has 12 divisors (see below), whose sum is σ = 34140120. Its totient is φ = 8778816.

The previous prime is 18533089. The next prime is 18533143. The reversal of 18533132 is 23133581.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121853 + ... + 122004.

It is an arithmetic number, because the mean of its divisors is an integer number (2845010).

Almost surely, 2^18533132 is an apocalyptic number.

It is an amenable number.

18533132 is a deficient number, since it is larger than the sum of its proper divisors (15606988).

18533132 is a wasteful number, since it uses less digits than its factorization.

18533132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243880 (or 243878 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 18533132 is about 4305.0124273921. The cubic root of 18533132 is about 264.6364160646.

The spelling of 18533132 in words is "eighteen million, five hundred thirty-three thousand, one hundred thirty-two".