19314018432 has 160 divisors (see below), whose sum is σ = 57573578700. Its totient is φ = 6427330560.

The previous prime is 19314018391. The next prime is 19314018497. The reversal of 19314018432 is 23481041391.

It can be written as a sum of positive squares in 2 ways, for example, as 16296054336 + 3017964096 = 127656^2 + 54936^2 .

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 19 ways as a sum of consecutive naturals, for example, 8510994 + ... + 8513262.

Almost surely, 2^19314018432 is an apocalyptic number.

19314018432 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 19314018432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28786789350).

19314018432 is an abundant number, since it is smaller than the sum of its proper divisors (38259560268).

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

19314018432 is an equidigital number, since it uses as much as digits as its factorization.

19314018432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116 (or 3095 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 19314018432 in words is "nineteen billion, three hundred fourteen million, eighteen thousand, four hundred thirty-two".