18357132 has 12 divisors (see below), whose sum is σ = 42833336. Its totient is φ = 6119040.

The previous prime is 18357113. The next prime is 18357149. The reversal of 18357132 is 23175381.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 18357132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764869 + ... + 764892.

Almost surely, 2^18357132 is an apocalyptic number.

18357132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18357132 is an abundant number, since it is smaller than the sum of its proper divisors (24476204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18357132 is a wasteful number, since it uses less digits than its factorization.

18357132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529768 (or 1529766 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 18357132 is about 4284.5223771151. The cubic root of 18357132 is about 263.7960431136.

The spelling of 18357132 in words is "eighteen million, three hundred fifty-seven thousand, one hundred thirty-two".