19357681344 has 56 divisors (see below), whose sum is σ = 51227632368. Its totient is φ = 6451246080.

The previous prime is 19357681333. The next prime is 19357681373. The reversal of 19357681344 is 44318675391.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1552254 + ... + 1564674.

Almost surely, 2^19357681344 is an apocalyptic number.

It is an amenable number.

19357681344 is an abundant number, since it is smaller than the sum of its proper divisors (31869951024).

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

19357681344 is a wasteful number, since it uses less digits than its factorization.

19357681344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20553 (or 20543 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The spelling of 19357681344 in words is "nineteen billion, three hundred fifty-seven million, six hundred eighty-one thousand, three hundred forty-four".