18064899 has 12 divisors (see below), whose sum is σ = 26143312. Its totient is φ = 12020400.

The previous prime is 18064889. The next prime is 18064901. The reversal of 18064899 is 99846081.

It is not a de Polignac number, because 18064899 - 2¹² = 18060803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18064819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4089 + ... + 7269.

Almost surely, 2^18064899 is an apocalyptic number.

18064899 is a deficient number, since it is larger than the sum of its proper divisors (8078413).

18064899 is a wasteful number, since it uses less digits than its factorization.

18064899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818 (or 3815 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 18064899 is about 4250.2822259234. The cubic root of 18064899 is about 262.3887310731.

The spelling of 18064899 in words is "eighteen million, sixty-four thousand, eight hundred ninety-nine".