18365968 has 20 divisors (see below), whose sum is σ = 35709520. Its totient is φ = 9150624.

The previous prime is 18365953. The next prime is 18365969. The reversal of 18365968 is 86956381.

It is not an unprimeable number, because it can be changed into a prime (18365969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3043 + ... + 6781.

It is an arithmetic number, because the mean of its divisors is an integer number (1785476).

Almost surely, 2^18365968 is an apocalyptic number.

It is an amenable number.

18365968 is a deficient number, since it is larger than the sum of its proper divisors (17343552).

18365968 is a wasteful number, since it uses less digits than its factorization.

18365968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054 (or 4048 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 18365968 is about 4285.5534065042. The cubic root of 18365968 is about 263.8383614154.

The spelling of 18365968 in words is "eighteen million, three hundred sixty-five thousand, nine hundred sixty-eight".