19442865996 has 96 divisors (see below), whose sum is σ = 50991655680. Its totient is φ = 6406117632.

The previous prime is 19442865973. The next prime is 19442865997. The reversal of 19442865996 is 69956824491.

19442865996 is a `hidden beast` number, since 19 + 4 + 4 + 28 + 6 + 599 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (19442865997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6042180 + ... + 6045396.

It is an arithmetic number, because the mean of its divisors is an integer number (531163080).

Almost surely, 2^19442865996 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 19442865996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25495827840).

19442865996 is an abundant number, since it is smaller than the sum of its proper divisors (31548789684).

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

19442865996 is a wasteful number, since it uses less digits than its factorization.

19442865996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860 (or 3852 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 19442865996 in words is "nineteen billion, four hundred forty-two million, eight hundred sixty-five thousand, nine hundred ninety-six".