18740368 has 20 divisors (see below), whose sum is σ = 37481728. Its totient is φ = 9067680.

The previous prime is 18740363. The next prime is 18740411. The reversal of 18740368 is 86304781.

It is a happy number.

18740368 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18740363) 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, 18396 + ... + 19387.

Almost surely, 2^18740368 is an apocalyptic number.

It is an amenable number.

18740368 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18740368 is a wasteful number, since it uses less digits than its factorization.

18740368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37822 (or 37816 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 18740368 is about 4329.0146684898. The cubic root of 18740368 is about 265.6191432711.

The spelling of 18740368 in words is "eighteen million, seven hundred forty thousand, three hundred sixty-eight".