18364832 has 12 divisors (see below), whose sum is σ = 36155826. Its totient is φ = 9182400.

The previous prime is 18364831. The next prime is 18364891. The reversal of 18364832 is 23846381.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18284176 + 80656 = 4276^2 + 284^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18364792 and 18364801.

It is not an unprimeable number, because it can be changed into a prime (18364831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286919 + ... + 286982.

Almost surely, 2^18364832 is an apocalyptic number.

It is an amenable number.

18364832 is a deficient number, since it is larger than the sum of its proper divisors (17790994).

18364832 is an equidigital number, since it uses as much as digits as its factorization.

18364832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573911 (or 573903 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 18364832 is about 4285.4208661461. The cubic root of 18364832 is about 263.8329215250.

The spelling of 18364832 in words is "eighteen million, three hundred sixty-four thousand, eight hundred thirty-two".