19684313880 has 384 divisors, whose sum is σ = 78094195200. Its totient is φ = 3874590720.

The previous prime is 19684313849. The next prime is 19684313911. The reversal of 19684313880 is 8831348691.

It is an interprime number because it is at equal distance from previous prime (19684313849) and next prime (19684313911).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1926064 + ... + 1936256.

It is an arithmetic number, because the mean of its divisors is an integer number (203370300).

Almost surely, 2^19684313880 is an apocalyptic number.

19684313880 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 19684313880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39047097600).

19684313880 is an abundant number, since it is smaller than the sum of its proper divisors (58409881320).

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

19684313880 is a wasteful number, since it uses less digits than its factorization.

19684313880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10255 (or 10240 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 19684313880 in words is "nineteen billion, six hundred eighty-four million, three hundred thirteen thousand, eight hundred eighty".