18139676 has 6 divisors (see below), whose sum is σ = 31744440. Its totient is φ = 9069836.

The previous prime is 18139633. The next prime is 18139711. The reversal of 18139676 is 67693181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2267456 + ... + 2267463.

It is an arithmetic number, because the mean of its divisors is an integer number (5290740).

Almost surely, 2^18139676 is an apocalyptic number.

It is an amenable number.

18139676 is a deficient number, since it is larger than the sum of its proper divisors (13604764).

18139676 is a wasteful number, since it uses less digits than its factorization.

18139676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4534923 (or 4534921 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 18139676 is about 4259.0698515051. The cubic root of 18139676 is about 262.7502725717.

The spelling of 18139676 in words is "eighteen million, one hundred thirty-nine thousand, six hundred seventy-six".