18464013 has 12 divisors (see below), whose sum is σ = 26732160. Its totient is φ = 12280776.

The previous prime is 18463979. The next prime is 18464051. The reversal of 18464013 is 31046481.

18464013 is a `hidden beast` number, since 1 + 8 + 4 + 640 + 13 = 666.

It is not a de Polignac number, because 18464013 - 2¹⁴ = 18447629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18464053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2170 + ... + 6452.

It is an arithmetic number, because the mean of its divisors is an integer number (2227680).

Almost surely, 2^18464013 is an apocalyptic number.

It is an amenable number.

18464013 is a deficient number, since it is larger than the sum of its proper divisors (8268147).

18464013 is a wasteful number, since it uses less digits than its factorization.

18464013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768 (or 4765 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 18464013 is about 4296.9771933302. The cubic root of 18464013 is about 264.3070205648.

The spelling of 18464013 in words is "eighteen million, four hundred sixty-four thousand, thirteen".