19439612334 has 20 divisors (see below), whose sum is σ = 43559131704. Its totient is φ = 6479870724.

The previous prime is 19439612323. The next prime is 19439612341. The reversal of 19439612334 is 43321693491.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19439612334.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 59998642 + ... + 59998965.

Almost surely, 2^19439612334 is an apocalyptic number.

19439612334 is an abundant number, since it is smaller than the sum of its proper divisors (24119519370).

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

19439612334 is a wasteful number, since it uses less digits than its factorization.

19439612334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119997621 (or 119997612 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The spelling of 19439612334 in words is "nineteen billion, four hundred thirty-nine million, six hundred twelve thousand, three hundred thirty-four".