18664083 has 6 divisors (see below), whose sum is σ = 26959244. Its totient is φ = 12442716.

The previous prime is 18664073. The next prime is 18664153. The reversal of 18664083 is 38046681.

It is a happy number.

18664083 is a `hidden beast` number, since 1 + 8 + 6 + 640 + 8 + 3 = 666.

It is not a de Polignac number, because 18664083 - 2⁹ = 18663571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18664073) 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, 1036885 + ... + 1036902.

Almost surely, 2^18664083 is an apocalyptic number.

18664083 is a deficient number, since it is larger than the sum of its proper divisors (8295161).

18664083 is a wasteful number, since it uses less digits than its factorization.

18664083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073793 (or 2073790 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 18664083 is about 4320.1947872752. The cubic root of 18664083 is about 265.2582412028.

The spelling of 18664083 in words is "eighteen million, six hundred sixty-four thousand, eighty-three".