18133368 has 32 divisors (see below), whose sum is σ = 49455360. Its totient is φ = 5494880.

The previous prime is 18133363. The next prime is 18133369. The reversal of 18133368 is 86333181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18133363) 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 7 ways as a sum of consecutive naturals, for example, 34080 + ... + 34607.

It is an arithmetic number, because the mean of its divisors is an integer number (1545480).

Almost surely, 2^18133368 is an apocalyptic number.

It is an amenable number.

18133368 is an abundant number, since it is smaller than the sum of its proper divisors (31321992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18133368 is a wasteful number, since it uses less digits than its factorization.

18133368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68707 (or 68703 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 18133368 is about 4258.3292498350. The cubic root of 18133368 is about 262.7198122541.

It can be divided in two parts, 18 and 133368, that added together give a triangular number (133386 = T₅₁₆).

The spelling of 18133368 in words is "eighteen million, one hundred thirty-three thousand, three hundred sixty-eight".