18957081732 has 24 divisors (see below), whose sum is σ = 44254793856. Its totient is φ = 6315941088.

The previous prime is 18957081713. The next prime is 18957081749. The reversal of 18957081732 is 23718075981.

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, 360108 + ... + 409379.

It is an arithmetic number, because the mean of its divisors is an integer number (1843949744).

Almost surely, 2^18957081732 is an apocalyptic number.

18957081732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18957081732 is an abundant number, since it is smaller than the sum of its proper divisors (25297712124).

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

18957081732 is a wasteful number, since it uses less digits than its factorization.

18957081732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771547 (or 771545 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 18957081732 in words is "eighteen billion, nine hundred fifty-seven million, eighty-one thousand, seven hundred thirty-two".