19863793120 has 72 divisors (see below), whose sum is σ = 48491232552. Its totient is φ = 7689150720.

The previous prime is 19863793099. The next prime is 19863793129. The reversal of 19863793120 is 2139736891.

It is a super-2 number, since 2×19863793120² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19863793129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89167 + ... + 218353.

It is an arithmetic number, because the mean of its divisors is an integer number (673489341).

Almost surely, 2^19863793120 is an apocalyptic number.

19863793120 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 19863793120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24245616276).

19863793120 is an abundant number, since it is smaller than the sum of its proper divisors (28627439432).

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

19863793120 is a wasteful number, since it uses less digits than its factorization.

19863793120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129264 (or 129225 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 19863793120 in words is "nineteen billion, eight hundred sixty-three million, seven hundred ninety-three thousand, one hundred twenty".