19047813968 has 20 divisors (see below), whose sum is σ = 36907364340. Its totient is φ = 9523332864.

The previous prime is 19047813947. The next prime is 19047813973. The reversal of 19047813968 is 86931874091.

It can be written as a sum of positive squares in 2 ways, for example, as 2258910784 + 16788903184 = 47528^2 + 129572^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393596 + ... + 439332.

It is an arithmetic number, because the mean of its divisors is an integer number (1845368217).

Almost surely, 2^19047813968 is an apocalyptic number.

It is an amenable number.

19047813968 is a deficient number, since it is larger than the sum of its proper divisors (17859550372).

19047813968 is a wasteful number, since it uses less digits than its factorization.

19047813968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71774 (or 71768 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 19047813968 in words is "nineteen billion, forty-seven million, eight hundred thirteen thousand, nine hundred sixty-eight".