18433868 has 12 divisors (see below), whose sum is σ = 32301192. Its totient is φ = 9204960.

The previous prime is 18433861. The next prime is 18433873. The reversal of 18433868 is 86833481.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18433861) by changing a digit.

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, 1088 + ... + 6168.

It is an arithmetic number, because the mean of its divisors is an integer number (2691766).

Almost surely, 2^18433868 is an apocalyptic number.

It is an amenable number.

18433868 is a deficient number, since it is larger than the sum of its proper divisors (13867324).

18433868 is a wasteful number, since it uses less digits than its factorization.

18433868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992 (or 5990 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 18433868 is about 4293.4680620682. The cubic root of 18433868 is about 264.1631032214.

The spelling of 18433868 in words is "eighteen million, four hundred thirty-three thousand, eight hundred sixty-eight".