19872768474 has 48 divisors (see below), whose sum is σ = 47820096000. Its totient is φ = 6114695184.

The previous prime is 19872768359. The next prime is 19872768521. The reversal of 19872768474 is 47486727891.

19872768474 is a `hidden beast` number, since 1 + 9 + 87 + 27 + 68 + 474 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1079674 + ... + 1097925.

It is an arithmetic number, because the mean of its divisors is an integer number (996252000).

Almost surely, 2^19872768474 is an apocalyptic number.

19872768474 is an abundant number, since it is smaller than the sum of its proper divisors (27947327526).

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

19872768474 is a wasteful number, since it uses less digits than its factorization.

19872768474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177636 (or 2177617 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 19872768474 in words is "nineteen billion, eight hundred seventy-two million, seven hundred sixty-eight thousand, four hundred seventy-four".