19889999048 has 64 divisors (see below), whose sum is σ = 40720216320. Its totient is φ = 9070848000.

The previous prime is 19889999047. The next prime is 19889999081. The reversal of 19889999048 is 84099998891.

It is a super-2 number, since 2×19889999048² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19889999047) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 830165 + ... + 853787.

It is an arithmetic number, because the mean of its divisors is an integer number (636253380).

Almost surely, 2^19889999048 is an apocalyptic number.

It is an amenable number.

19889999048 is an abundant number, since it is smaller than the sum of its proper divisors (20830217272).

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

19889999048 is a wasteful number, since it uses less digits than its factorization.

19889999048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23838 (or 23834 counting only the distinct ones).

The product of its (nonzero) digits is 120932352, while the sum is 74.

The spelling of 19889999048 in words is "nineteen billion, eight hundred eighty-nine million, nine hundred ninety-nine thousand, forty-eight".