18023747832 has 64 divisors (see below), whose sum is σ = 50089017600. Its totient is φ = 6005149920.

The previous prime is 18023747831. The next prime is 18023747839. The reversal of 18023747832 is 23874732081.

18023747832 is a `hidden beast` number, since 180 + 2 + 374 + 78 + 32 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18023747831) 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, 481123 + ... + 517229.

It is an arithmetic number, because the mean of its divisors is an integer number (782640900).

Almost surely, 2^18023747832 is an apocalyptic number.

18023747832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18023747832 is an abundant number, since it is smaller than the sum of its proper divisors (32065269768).

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

18023747832 is a wasteful number, since it uses less digits than its factorization.

18023747832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38433 (or 38423 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 18023747832 in words is "eighteen billion, twenty-three million, seven hundred forty-seven thousand, eight hundred thirty-two".