18238952 has 8 divisors (see below), whose sum is σ = 34198050. Its totient is φ = 9119472.

The previous prime is 18238937. The next prime is 18238981. The reversal of 18238952 is 25983281.

It can be written as a sum of positive squares in only one way, i.e., 14182756 + 4056196 = 3766^2 + 2014^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139927 + ... + 1139942.

Almost surely, 2^18238952 is an apocalyptic number.

It is an amenable number.

18238952 is a deficient number, since it is larger than the sum of its proper divisors (15959098).

18238952 is a wasteful number, since it uses less digits than its factorization.

18238952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279875 (or 2279871 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 18238952 is about 4270.7086063088. The cubic root of 18238952 is about 263.2287330475.

The spelling of 18238952 in words is "eighteen million, two hundred thirty-eight thousand, nine hundred fifty-two".