18439196 has 12 divisors (see below), whose sum is σ = 33967080. Its totient is φ = 8734320.

The previous prime is 18439159. The next prime is 18439207. The reversal of 18439196 is 69193481.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 121235 + ... + 121386.

It is an arithmetic number, because the mean of its divisors is an integer number (2830590).

Almost surely, 2^18439196 is an apocalyptic number.

It is an amenable number.

18439196 is a deficient number, since it is larger than the sum of its proper divisors (15527884).

18439196 is a wasteful number, since it uses less digits than its factorization.

18439196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242644 (or 242642 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 18439196 is about 4294.0884946633. The cubic root of 18439196 is about 264.1885514061.

The spelling of 18439196 in words is "eighteen million, four hundred thirty-nine thousand, one hundred ninety-six".