18364856 has 16 divisors (see below), whose sum is σ = 35931600. Its totient is φ = 8783104.

The previous prime is 18364831. The next prime is 18364891. The reversal of 18364856 is 65846381.

It is a congruent 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 in 3 ways as a sum of consecutive naturals, for example, 49721 + ... + 50088.

It is an arithmetic number, because the mean of its divisors is an integer number (2245725).

Almost surely, 2^18364856 is an apocalyptic number.

It is an amenable number.

18364856 is a deficient number, since it is larger than the sum of its proper divisors (17566744).

18364856 is a wasteful number, since it uses less digits than its factorization.

18364856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99838 (or 99834 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 18364856 is about 4285.4236663369. The cubic root of 18364856 is about 263.8330364545.

The spelling of 18364856 in words is "eighteen million, three hundred sixty-four thousand, eight hundred fifty-six".