19318320000 has 480 divisors, whose sum is σ = 79410268080. Its totient is φ = 4414464000.

The previous prime is 19318319987. The next prime is 19318320019. The reversal of 19318320000 is 2381391.

It is a tau number, because it is divible by the number of its divisors (480).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 5038084 + ... + 5041916.

Almost surely, 2^19318320000 is an apocalyptic number.

19318320000 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 19318320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39705134040).

19318320000 is an abundant number, since it is smaller than the sum of its proper divisors (60091948080).

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

19318320000 is an equidigital number, since it uses as much as digits as its factorization.

19318320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880 (or 3850 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 19318320000 in words is "nineteen billion, three hundred eighteen million, three hundred twenty thousand".