19875289798 has 64 divisors (see below), whose sum is σ = 38990246400. Its totient is φ = 7373763072.

The previous prime is 19875289727. The next prime is 19875289799. The reversal of 19875289798 is 89798257891.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19875289798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19875289799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 864253 + ... + 886951.

It is an arithmetic number, because the mean of its divisors is an integer number (609222600).

Almost surely, 2^19875289798 is an apocalyptic number.

19875289798 is a deficient number, since it is larger than the sum of its proper divisors (19114956602).

19875289798 is a wasteful number, since it uses less digits than its factorization.

19875289798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23021.

The product of its digits is 182891520, while the sum is 73.

The spelling of 19875289798 in words is "nineteen billion, eight hundred seventy-five million, two hundred eighty-nine thousand, seven hundred ninety-eight".