18064988 has 24 divisors (see below), whose sum is σ = 32643072. Its totient is φ = 8742384.

The previous prime is 18064973. The next prime is 18065023. The reversal of 18064988 is 88946081.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21431 + ... + 22257.

It is an arithmetic number, because the mean of its divisors is an integer number (1360128).

Almost surely, 2^18064988 is an apocalyptic number.

It is an amenable number.

18064988 is a deficient number, since it is larger than the sum of its proper divisors (14578084).

18064988 is a wasteful number, since it uses less digits than its factorization.

18064988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 18064988 is about 4250.2926958034. The cubic root of 18064988 is about 262.3891619743.

The spelling of 18064988 in words is "eighteen million, sixty-four thousand, nine hundred eighty-eight".