19144319768 has 32 divisors (see below), whose sum is σ = 41028879360. Its totient is φ = 8203641120.

The previous prime is 19144319729. The next prime is 19144319773. The reversal of 19144319768 is 86791344191.

It is a Cunningham number, because it is equal to 138363²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536153 + ... + 570743.

It is an arithmetic number, because the mean of its divisors is an integer number (1282152480).

Almost surely, 2^19144319768 is an apocalyptic number.

It is an amenable number.

19144319768 is an abundant number, since it is smaller than the sum of its proper divisors (21884559592).

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

19144319768 is a wasteful number, since it uses less digits than its factorization.

19144319768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44487 (or 44483 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The spelling of 19144319768 in words is "nineteen billion, one hundred forty-four million, three hundred nineteen thousand, seven hundred sixty-eight".