18938252 has 6 divisors (see below), whose sum is σ = 33141948. Its totient is φ = 9469124.

The previous prime is 18938239. The next prime is 18938273. The reversal of 18938252 is 25283981.

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 as a sum of consecutive naturals, namely, 2367278 + ... + 2367285.

It is an arithmetic number, because the mean of its divisors is an integer number (5523658).

Almost surely, 2^18938252 is an apocalyptic number.

It is an amenable number.

18938252 is a deficient number, since it is larger than the sum of its proper divisors (14203696).

18938252 is a wasteful number, since it uses less digits than its factorization.

18938252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734567 (or 4734565 counting only the distinct ones).

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

The square root of 18938252 is about 4351.8101980670. The cubic root of 18938252 is about 266.5507836768.

The spelling of 18938252 in words is "eighteen million, nine hundred thirty-eight thousand, two hundred fifty-two".