19722894988 has 24 divisors (see below), whose sum is σ = 34897806720. Its totient is φ = 9752323200.

The previous prime is 19722894973. The next prime is 19722895037. The reversal of 19722894988 is 88949822791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320368 + ... + 376936.

It is an arithmetic number, because the mean of its divisors is an integer number (1454075280).

Almost surely, 2^19722894988 is an apocalyptic number.

It is an amenable number.

19722894988 is a deficient number, since it is larger than the sum of its proper divisors (15174911732).

19722894988 is a wasteful number, since it uses less digits than its factorization.

19722894988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57537 (or 57535 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 67.

The spelling of 19722894988 in words is "nineteen billion, seven hundred twenty-two million, eight hundred ninety-four thousand, nine hundred eighty-eight".