19983915000 has 1200 divisors, whose sum is σ = 87262223400. Its totient is φ = 4245696000.

The previous prime is 19983914983. The next prime is 19983915011. The reversal of 19983915000 is 51938991.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 299 ways as a sum of consecutive naturals, for example, 377054974 + ... + 377055026.

Almost surely, 2^19983915000 is an apocalyptic number.

19983915000 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 19983915000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43631111700).

19983915000 is an abundant number, since it is smaller than the sum of its proper divisors (67278308400).

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

19983915000 is a wasteful number, since it uses less digits than its factorization.

19983915000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 19983915000 in words is "nineteen billion, nine hundred eighty-three million, nine hundred fifteen thousand".