18083664 has 60 divisors (see below), whose sum is σ = 52254592. Its totient is φ = 5832000.

The previous prime is 18083651. The next prime is 18083671. The reversal of 18083664 is 46638081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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, 2439 + ... + 6489.

Almost surely, 2^18083664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18083664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26127296).

18083664 is an abundant number, since it is smaller than the sum of its proper divisors (34170928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18083664 is a wasteful number, since it uses less digits than its factorization.

18083664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4096 (or 4087 counting only the distinct ones).

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

The square root of 18083664 is about 4252.4891534253. The cubic root of 18083664 is about 262.4795521487.

The spelling of 18083664 in words is "eighteen million, eighty-three thousand, six hundred sixty-four".