18158968 has 32 divisors (see below), whose sum is σ = 34997760. Its totient is φ = 8830080.

The previous prime is 18158953. The next prime is 18158977. The reversal of 18158968 is 86985181.

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 7 ways as a sum of consecutive naturals, for example, 61830 + ... + 62122.

It is an arithmetic number, because the mean of its divisors is an integer number (1093680).

Almost surely, 2^18158968 is an apocalyptic number.

It is an amenable number.

18158968 is a deficient number, since it is larger than the sum of its proper divisors (16838792).

18158968 is a wasteful number, since it uses less digits than its factorization.

18158968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 483 counting only the distinct ones).

The product of its digits is 138240, while the sum is 46.

The square root of 18158968 is about 4261.3340634125. The cubic root of 18158968 is about 262.8433867362.

The spelling of 18158968 in words is "eighteen million, one hundred fifty-eight thousand, nine hundred sixty-eight".