18379916 has 24 divisors (see below), whose sum is σ = 34440000. Its totient is φ = 8556624.

The previous prime is 18379913. The next prime is 18379927. The reversal of 18379916 is 61997381.

It is not an unprimeable number, because it can be changed into a prime (18379913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2435 + ... + 6533.

It is an arithmetic number, because the mean of its divisors is an integer number (1435000).

Almost surely, 2^18379916 is an apocalyptic number.

It is an amenable number.

18379916 is a deficient number, since it is larger than the sum of its proper divisors (16060084).

18379916 is a wasteful number, since it uses less digits than its factorization.

18379916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181 (or 4179 counting only the distinct ones).

The product of its digits is 81648, while the sum is 44.

The square root of 18379916 is about 4287.1804254078. The cubic root of 18379916 is about 263.9051350310.

The spelling of 18379916 in words is "eighteen million, three hundred seventy-nine thousand, nine hundred sixteen".