19992000798 has 384 divisors, whose sum is σ = 59246208000. Its totient is φ = 4852742400.

The previous prime is 19992000767. The next prime is 19992000817. The reversal of 19992000798 is 89700029991.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 134174428 + ... + 134174576.

It is an arithmetic number, because the mean of its divisors is an integer number (154287000).

Almost surely, 2^19992000798 is an apocalyptic number.

19992000798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19992000798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29623104000).

19992000798 is an abundant number, since it is smaller than the sum of its proper divisors (39254207202).

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

19992000798 is a wasteful number, since it uses less digits than its factorization.

19992000798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The spelling of 19992000798 in words is "nineteen billion, nine hundred ninety-two million, seven hundred ninety-eight", and thus it is an aban number.