18104913 has 6 divisors (see below), whose sum is σ = 26151554. Its totient is φ = 12069936.

The previous prime is 18104909. The next prime is 18104923. The reversal of 18104913 is 31940181.

It can be written as a sum of positive squares in only one way, i.e., 17918289 + 186624 = 4233^2 + 432^2 .

It is not a de Polignac number, because 18104913 - 2² = 18104909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18104923) 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, 1005820 + ... + 1005837.

Almost surely, 2^18104913 is an apocalyptic number.

It is an amenable number.

18104913 is a deficient number, since it is larger than the sum of its proper divisors (8046641).

18104913 is a wasteful number, since it uses less digits than its factorization.

18104913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011663 (or 2011660 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 18104913 is about 4254.9868389926. The cubic root of 18104913 is about 262.5823197601.

The spelling of 18104913 in words is "eighteen million, one hundred four thousand, nine hundred thirteen".