18387541732 has 24 divisors (see below), whose sum is σ = 36967633920. Its totient is φ = 7839114240.

The previous prime is 18387541729. The next prime is 18387541801. The reversal of 18387541732 is 23714578381.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1713757 + ... + 1724452.

It is an arithmetic number, because the mean of its divisors is an integer number (1540318080).

Almost surely, 2^18387541732 is an apocalyptic number.

It is an amenable number.

18387541732 is an abundant number, since it is smaller than the sum of its proper divisors (18580092188).

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

18387541732 is a wasteful number, since it uses less digits than its factorization.

18387541732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438411 (or 3438409 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 49.

The spelling of 18387541732 in words is "eighteen billion, three hundred eighty-seven million, five hundred forty-one thousand, seven hundred thirty-two".