19928188384 has 48 divisors (see below), whose sum is σ = 42293875680. Its totient is φ = 9188421120.

The previous prime is 19928188297. The next prime is 19928188391. The reversal of 19928188384 is 48388182991.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 401277 + ... + 448195.

It is an arithmetic number, because the mean of its divisors is an integer number (881122410).

Almost surely, 2^19928188384 is an apocalyptic number.

It is an amenable number.

19928188384 is an abundant number, since it is smaller than the sum of its proper divisors (22365687296).

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

19928188384 is a wasteful number, since it uses less digits than its factorization.

19928188384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47963 (or 47955 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 61.

The spelling of 19928188384 in words is "nineteen billion, nine hundred twenty-eight million, one hundred eighty-eight thousand, three hundred eighty-four".