19854634712 has 16 divisors (see below), whose sum is σ = 40611753000. Its totient is φ = 9024833920.

The previous prime is 19854634699. The next prime is 19854634771. The reversal of 19854634712 is 21743645891.

It is a happy number.

It is a congruent number.

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, 112810337 + ... + 112810512.

Almost surely, 2^19854634712 is an apocalyptic number.

It is an amenable number.

19854634712 is an abundant number, since it is smaller than the sum of its proper divisors (20757118288).

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

19854634712 is a wasteful number, since it uses less digits than its factorization.

19854634712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225620866 (or 225620862 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The spelling of 19854634712 in words is "nineteen billion, eight hundred fifty-four million, six hundred thirty-four thousand, seven hundred twelve".