19992327936 has 144 divisors (see below), whose sum is σ = 60981709824. Its totient is φ = 5695967232.

The previous prime is 19992327923. The next prime is 19992327961. The reversal of 19992327936 is 63972329991.

It is a self number, because there is not a number n which added to its sum of digits gives 19992327936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1967926 + ... + 1978058.

It is an arithmetic number, because the mean of its divisors is an integer number (423484096).

Almost surely, 2^19992327936 is an apocalyptic number.

19992327936 is a gapful number since it is divisible by the number (16) 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 19992327936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30490854912).

19992327936 is an abundant number, since it is smaller than the sum of its proper divisors (40989381888).

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

19992327936 is a wasteful number, since it uses less digits than its factorization.

19992327936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526 (or 10512 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 60.

The spelling of 19992327936 in words is "nineteen billion, nine hundred ninety-two million, three hundred twenty-seven thousand, nine hundred thirty-six".