19798904160 has 864 divisors, whose sum is σ = 83479818240. Its totient is φ = 4182976512.

The previous prime is 19798904143. The next prime is 19798904171. The reversal of 19798904160 is 6140989791.

It is a junction number, because it is equal to n+sod(n) for n = 19798904097 and 19798904106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 250619001 + ... + 250619079.

It is an arithmetic number, because the mean of its divisors is an integer number (96620160).

Almost surely, 2^19798904160 is an apocalyptic number.

19798904160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19798904160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41739909120).

19798904160 is an abundant number, since it is smaller than the sum of its proper divisors (63680914080).

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

19798904160 is a wasteful number, since it uses less digits than its factorization.

19798904160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 19798904160 in words is "nineteen billion, seven hundred ninety-eight million, nine hundred four thousand, one hundred sixty".