18338812 has 12 divisors (see below), whose sum is σ = 32839576. Its totient is φ = 8956080.

The previous prime is 18338809. The next prime is 18338833. The reversal of 18338812 is 21883381.

It is a congruent number.

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, 53139 + ... + 53482.

Almost surely, 2^18338812 is an apocalyptic number.

It is an amenable number.

18338812 is a deficient number, since it is larger than the sum of its proper divisors (14500764).

18338812 is a wasteful number, since it uses less digits than its factorization.

18338812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106668 (or 106666 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 18338812 is about 4282.3839155312. The cubic root of 18338812 is about 263.7082597559.

The spelling of 18338812 in words is "eighteen million, three hundred thirty-eight thousand, eight hundred twelve".