19214732864 has 28 divisors (see below), whose sum is σ = 39787031424. Its totient is φ = 9189654144.

The previous prime is 19214732839. The next prime is 19214732897. The reversal of 19214732864 is 46823741291.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6525272 + ... + 6528215.

It is an arithmetic number, because the mean of its divisors is an integer number (1420965408).

Almost surely, 2^19214732864 is an apocalyptic number.

It is an amenable number.

19214732864 is an abundant number, since it is smaller than the sum of its proper divisors (20572298560).

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

19214732864 is a wasteful number, since it uses less digits than its factorization.

19214732864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13053522 (or 13053512 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The spelling of 19214732864 in words is "nineteen billion, two hundred fourteen million, seven hundred thirty-two thousand, eight hundred sixty-four".