18404612 has 6 divisors (see below), whose sum is σ = 32208078. Its totient is φ = 9202304.

The previous prime is 18404609. The next prime is 18404627. The reversal of 18404612 is 21640481.

It can be written as a sum of positive squares in only one way, i.e., 11519236 + 6885376 = 3394^2 + 2624^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2300573 + ... + 2300580.

It is an arithmetic number, because the mean of its divisors is an integer number (5368013).

Almost surely, 2^18404612 is an apocalyptic number.

It is an amenable number.

18404612 is a deficient number, since it is larger than the sum of its proper divisors (13803466).

18404612 is a wasteful number, since it uses less digits than its factorization.

18404612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601157 (or 4601155 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18404612 is about 4290.0596732447. The cubic root of 18404612 is about 264.0232800101.

The spelling of 18404612 in words is "eighteen million, four hundred four thousand, six hundred twelve".