19081967996 has 96 divisors (see below), whose sum is σ = 42042188160. Its totient is φ = 7376937984.

The previous prime is 19081967987. The next prime is 19081968047. The reversal of 19081967996 is 69976918091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5187710 + ... + 5191386.

It is an arithmetic number, because the mean of its divisors is an integer number (437939460).

Almost surely, 2^19081967996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19081967996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21021094080).

19081967996 is an abundant number, since it is smaller than the sum of its proper divisors (22960220164).

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

19081967996 is a wasteful number, since it uses less digits than its factorization.

19081967996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023 (or 4021 counting only the distinct ones).

The product of its (nonzero) digits is 13226976, while the sum is 65.

The spelling of 19081967996 in words is "nineteen billion, eighty-one million, nine hundred sixty-seven thousand, nine hundred ninety-six".