18064556 has 6 divisors (see below), whose sum is σ = 31612980. Its totient is φ = 9032276.

The previous prime is 18064549. The next prime is 18064567. The reversal of 18064556 is 65546081.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2258066 + ... + 2258073.

It is an arithmetic number, because the mean of its divisors is an integer number (5268830).

Almost surely, 2^18064556 is an apocalyptic number.

It is an amenable number.

18064556 is a deficient number, since it is larger than the sum of its proper divisors (13548424).

18064556 is a wasteful number, since it uses less digits than its factorization.

18064556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516143 (or 4516141 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 18064556 is about 4250.2418754701. The cubic root of 18064556 is about 262.3870703958.

The spelling of 18064556 in words is "eighteen million, sixty-four thousand, five hundred fifty-six".