19253782564 has 9 divisors (see below), whose sum is σ = 33694605147. Its totient is φ = 9626752524.

The previous prime is 19253782553. The next prime is 19253782571. The reversal of 19253782564 is 46528735291.

The square root of 19253782564 is 138758.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 242827 + ... + 312205.

Almost surely, 2^19253782564 is an apocalyptic number.

19253782564 is the 138758-th square number.

It is an amenable number.

19253782564 is a deficient number, since it is larger than the sum of its proper divisors (14440822583).

19253782564 is an frugal number, since it uses more digits than its factorization.

19253782564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138762 (or 69381 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 52.

The spelling of 19253782564 in words is "nineteen billion, two hundred fifty-three million, seven hundred eighty-two thousand, five hundred sixty-four".