19731327192 has 80 divisors (see below), whose sum is σ = 55443124440. Its totient is φ = 6556028544.

The previous prime is 19731327167. The next prime is 19731327199. The reversal of 19731327192 is 29172313791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19731327199) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 154183 + ... + 251465.

Almost surely, 2^19731327192 is an apocalyptic number.

19731327192 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 19731327192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27721562220).

19731327192 is an abundant number, since it is smaller than the sum of its proper divisors (35711797248).

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

19731327192 is a wasteful number, since it uses less digits than its factorization.

19731327192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97614 (or 97601 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The spelling of 19731327192 in words is "nineteen billion, seven hundred thirty-one million, three hundred twenty-seven thousand, one hundred ninety-two".