19384435984 has 15 divisors (see below), whose sum is σ = 37558423767. Its totient is φ = 9691939536.

The previous prime is 19384435937. The next prime is 19384436021. The reversal of 19384435984 is 48953448391.

The square root of 19384435984 is 139228.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 539509 + ... + 574315.

Almost surely, 2^19384435984 is an apocalyptic number.

19384435984 is the 139228-th square number.

It is an amenable number.

19384435984 is a deficient number, since it is larger than the sum of its proper divisors (18173987783).

19384435984 is an frugal number, since it uses more digits than its factorization.

19384435984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69622 (or 34809 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 58.

The spelling of 19384435984 in words is "nineteen billion, three hundred eighty-four million, four hundred thirty-five thousand, nine hundred eighty-four".