19776234384 has 45 divisors (see below), whose sum is σ = 55350712443. Its totient is φ = 6591515616.

The previous prime is 19776234353. The next prime is 19776234389. The reversal of 19776234384 is 48343267791.

The square root of 19776234384 is 140628.

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

19776234384 is a `hidden beast` number, since 1 + 9 + 7 + 7 + 623 + 4 + 3 + 8 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 19776234384.

It is not an unprimeable number, because it can be changed into a prime (19776234389) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1681677 + ... + 1693395.

Almost surely, 2^19776234384 is an apocalyptic number.

19776234384 is the 140628-th square number.

It is an amenable number.

19776234384 is an abundant number, since it is smaller than the sum of its proper divisors (35574478059).

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

19776234384 is an frugal number, since it uses more digits than its factorization.

19776234384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23452 (or 11724 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 19776234384 in words is "nineteen billion, seven hundred seventy-six million, two hundred thirty-four thousand, three hundred eighty-four".