18258868 has 12 divisors (see below), whose sum is σ = 32025280. Its totient is φ = 9108792.

The previous prime is 18258859. The next prime is 18258869. The reversal of 18258868 is 86885281.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18258869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3078 + ... + 6781.

Almost surely, 2^18258868 is an apocalyptic number.

It is an amenable number.

18258868 is a deficient number, since it is larger than the sum of its proper divisors (13766412).

18258868 is a wasteful number, since it uses less digits than its factorization.

18258868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10326 (or 10324 counting only the distinct ones).

The product of its digits is 245760, while the sum is 46.

The square root of 18258868 is about 4273.0396674967. The cubic root of 18258868 is about 263.3245089532.

The spelling of 18258868 in words is "eighteen million, two hundred fifty-eight thousand, eight hundred sixty-eight".