19312318080 has 896 divisors, whose sum is σ = 78022362240. Its totient is φ = 4528742400.

The previous prime is 19312318049. The next prime is 19312318159. The reversal of 19312318080 is 8081321391.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 272004445 + ... + 272004515.

Almost surely, 2^19312318080 is an apocalyptic number.

19312318080 is a gapful number since it is divisible by the number (10) 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 19312318080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39011181120).

19312318080 is an abundant number, since it is smaller than the sum of its proper divisors (58710044160).

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

19312318080 is an equidigital number, since it uses as much as digits as its factorization.

19312318080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 19312318080 in words is "nineteen billion, three hundred twelve million, three hundred eighteen thousand, eighty".