19974813234 has 32 divisors (see below), whose sum is σ = 41454305280. Its totient is φ = 6409741200.

The previous prime is 19974813217. The next prime is 19974813253. The reversal of 19974813234 is 43231847991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245604 + ... + 316655.

It is an arithmetic number, because the mean of its divisors is an integer number (1295447040).

Almost surely, 2^19974813234 is an apocalyptic number.

19974813234 is an abundant number, since it is smaller than the sum of its proper divisors (21479492046).

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

19974813234 is a wasteful number, since it uses less digits than its factorization.

19974813234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562486.

The product of its digits is 1306368, while the sum is 51.

The spelling of 19974813234 in words is "nineteen billion, nine hundred seventy-four million, eight hundred thirteen thousand, two hundred thirty-four".