18079391232 has 180 divisors, whose sum is σ = 60698019096. Its totient is φ = 5165475840.

The previous prime is 18079391227. The next prime is 18079391249. The reversal of 18079391232 is 23219397081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 185757 + ... + 265827.

Almost surely, 2^18079391232 is an apocalyptic number.

18079391232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18079391232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30349009548).

18079391232 is an abundant number, since it is smaller than the sum of its proper divisors (42618627864).

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

18079391232 is an equidigital number, since it uses as much as digits as its factorization.

18079391232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80109 (or 80083 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 18079391232 in words is "eighteen billion, seventy-nine million, three hundred ninety-one thousand, two hundred thirty-two".