18395379 has 6 divisors (see below), whose sum is σ = 26571116. Its totient is φ = 12263580.

The previous prime is 18395359. The next prime is 18395393. The reversal of 18395379 is 97359381.

It is a happy number.

It is not a de Polignac number, because 18395379 - 2⁸ = 18395123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18395359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021957 + ... + 1021974.

Almost surely, 2^18395379 is an apocalyptic number.

18395379 is a deficient number, since it is larger than the sum of its proper divisors (8175737).

18395379 is a wasteful number, since it uses less digits than its factorization.

18395379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043937 (or 2043934 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 18395379 is about 4288.9834459928. The cubic root of 18395379 is about 263.9791219715.

The spelling of 18395379 in words is "eighteen million, three hundred ninety-five thousand, three hundred seventy-nine".