19448931768 has 64 divisors (see below), whose sum is σ = 55992625920. Its totient is φ = 5514412800.

The previous prime is 19448931739. The next prime is 19448931811. The reversal of 19448931768 is 86713984491.

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, 419853 + ... + 463868.

It is an arithmetic number, because the mean of its divisors is an integer number (874884780).

Almost surely, 2^19448931768 is an apocalyptic number.

It is an amenable number.

19448931768 is an abundant number, since it is smaller than the sum of its proper divisors (36543694152).

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

19448931768 is a wasteful number, since it uses less digits than its factorization.

19448931768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883868 (or 883864 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 60.

The spelling of 19448931768 in words is "nineteen billion, four hundred forty-eight million, nine hundred thirty-one thousand, seven hundred sixty-eight".