18937058240 has 56 divisors (see below), whose sum is σ = 45109894032. Its totient is φ = 7572131840.

The previous prime is 18937058233. The next prime is 18937058243. The reversal of 18937058240 is 4285073981.

It is a happy number.

It is a super-2 number, since 2×18937058240² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) 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 (18937058243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062200 + ... + 1079880.

It is an arithmetic number, because the mean of its divisors is an integer number (805533822).

Almost surely, 2^18937058240 is an apocalyptic number.

18937058240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18937058240 is an abundant number, since it is smaller than the sum of its proper divisors (26172835792).

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

18937058240 is a wasteful number, since it uses less digits than its factorization.

18937058240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21045 (or 21035 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 18937058240 in words is "eighteen billion, nine hundred thirty-seven million, fifty-eight thousand, two hundred forty".