19842700980 has 96 divisors (see below), whose sum is σ = 56916357120. Its totient is φ = 5163540480.

The previous prime is 19842700957. The next prime is 19842700991. The reversal of 19842700980 is 8900724891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443476 + ... + 486164.

It is an arithmetic number, because the mean of its divisors is an integer number (592878720).

Almost surely, 2^19842700980 is an apocalyptic number.

19842700980 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 19842700980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28458178560).

19842700980 is an abundant number, since it is smaller than the sum of its proper divisors (37073656140).

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

19842700980 is a wasteful number, since it uses less digits than its factorization.

19842700980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42889 (or 42887 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 19842700980 in words is "nineteen billion, eight hundred forty-two million, seven hundred thousand, nine hundred eighty".