19818708000 has 384 divisors, whose sum is σ = 79913433600. Its totient is φ = 4181299200.

The previous prime is 19818707989. The next prime is 19818708017. The reversal of 19818708000 is 80781891.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1082926 + ... + 1101074.

It is an arithmetic number, because the mean of its divisors is an integer number (208107900).

Almost surely, 2^19818708000 is an apocalyptic number.

19818708000 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 19818708000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39956716800).

19818708000 is an abundant number, since it is smaller than the sum of its proper divisors (60094725600).

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

19818708000 is a wasteful number, since it uses less digits than its factorization.

19818708000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18197 (or 18179 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 42.

The spelling of 19818708000 in words is "nineteen billion, eight hundred eighteen million, seven hundred eight thousand".