19422642788 has 24 divisors (see below), whose sum is σ = 34168646400. Its totient is φ = 9660289248.

The previous prime is 19422642773. The next prime is 19422642791. The reversal of 19422642788 is 88724622491.

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 7 ways as a sum of consecutive naturals, for example, 671693 + ... + 700011.

It is an arithmetic number, because the mean of its divisors is an integer number (1423693600).

Almost surely, 2^19422642788 is an apocalyptic number.

It is an amenable number.

19422642788 is a deficient number, since it is larger than the sum of its proper divisors (14746003612).

19422642788 is a wasteful number, since it uses less digits than its factorization.

19422642788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29219 (or 29217 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 53.

The spelling of 19422642788 in words is "nineteen billion, four hundred twenty-two million, six hundred forty-two thousand, seven hundred eighty-eight".