19894716744 has 64 divisors (see below), whose sum is σ = 56853187200. Its totient is φ = 5683090944.

The previous prime is 19894716719. The next prime is 19894716823. The reversal of 19894716744 is 44761749891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1265122 + ... + 1280750.

It is an arithmetic number, because the mean of its divisors is an integer number (888331050).

Almost surely, 2^19894716744 is an apocalyptic number.

19894716744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19894716744 is an abundant number, since it is smaller than the sum of its proper divisors (36958470456).

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

19894716744 is a wasteful number, since it uses less digits than its factorization.

19894716744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23222 (or 23218 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 60.

The spelling of 19894716744 in words is "nineteen billion, eight hundred ninety-four million, seven hundred sixteen thousand, seven hundred forty-four".