18099964 has 6 divisors (see below), whose sum is σ = 31674944. Its totient is φ = 9049980.

The previous prime is 18099941. The next prime is 18099967. The reversal of 18099964 is 46999081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18099967) 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 as a sum of consecutive naturals, namely, 2262492 + ... + 2262499.

Almost surely, 2^18099964 is an apocalyptic number.

It is an amenable number.

18099964 is a deficient number, since it is larger than the sum of its proper divisors (13574980).

18099964 is a wasteful number, since it uses less digits than its factorization.

18099964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524995 (or 4524993 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 18099964 is about 4254.4052463300. The cubic root of 18099964 is about 262.5583918475.

The spelling of 18099964 in words is "eighteen million, ninety-nine thousand, nine hundred sixty-four".