18013500372 has 48 divisors (see below), whose sum is σ = 48098316672. Its totient is φ = 5140037760.

The previous prime is 18013500371. The next prime is 18013500391. The reversal of 18013500372 is 27300531081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18013500371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73779 + ... + 203642.

It is an arithmetic number, because the mean of its divisors is an integer number (1002048264).

Almost surely, 2^18013500372 is an apocalyptic number.

18013500372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18013500372 is an abundant number, since it is smaller than the sum of its proper divisors (30084816300).

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

18013500372 is a wasteful number, since it uses less digits than its factorization.

18013500372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278208 (or 278206 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The spelling of 18013500372 in words is "eighteen billion, thirteen million, five hundred thousand, three hundred seventy-two".