19319932920 has 64 divisors (see below), whose sum is σ = 57983610240. Its totient is φ = 5149865600.

The previous prime is 19319932883. The next prime is 19319932937. The reversal of 19319932920 is 2923991391.

It is a self number, because there is not a number n which added to its sum of digits gives 19319932920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271915 + ... + 335525.

It is an arithmetic number, because the mean of its divisors is an integer number (905993910).

Almost surely, 2^19319932920 is an apocalyptic number.

19319932920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19319932920 is an abundant number, since it is smaller than the sum of its proper divisors (38663677320).

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

19319932920 is a wasteful number, since it uses less digits than its factorization.

19319932920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66156 (or 66152 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 48.

The spelling of 19319932920 in words is "nineteen billion, three hundred nineteen million, nine hundred thirty-two thousand, nine hundred twenty".