18332163 has 14 divisors (see below), whose sum is σ = 27486764. Its totient is φ = 12220956.

The previous prime is 18332143. The next prime is 18332177. The reversal of 18332163 is 36123381.

It is a happy number.

It is not a de Polignac number, because 18332163 - 2⁶ = 18332099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18332113) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 11845 + ... + 13302.

Almost surely, 2^18332163 is an apocalyptic number.

18332163 is a deficient number, since it is larger than the sum of its proper divisors (9154601).

18332163 is an frugal number, since it uses more digits than its factorization.

18332163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25165 (or 25150 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 18332163 is about 4281.6075252176. The cubic root of 18332163 is about 263.6763854962.

The spelling of 18332163 in words is "eighteen million, three hundred thirty-two thousand, one hundred sixty-three".