19374843808 has 24 divisors (see below), whose sum is σ = 38170675872. Its totient is φ = 9680703936.

The previous prime is 19374843751. The next prime is 19374843811. The reversal of 19374843808 is 80834847391.

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, 162910 + ... + 255517.

It is an arithmetic number, because the mean of its divisors is an integer number (1590444828).

Almost surely, 2^19374843808 is an apocalyptic number.

It is an amenable number.

19374843808 is a deficient number, since it is larger than the sum of its proper divisors (18795832064).

19374843808 is a wasteful number, since it uses less digits than its factorization.

19374843808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419884 (or 419876 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 19374843808 in words is "nineteen billion, three hundred seventy-four million, eight hundred forty-three thousand, eight hundred eight".