19042038556 has 12 divisors (see below), whose sum is σ = 33417970992. Its totient is φ = 9494046848.

The previous prime is 19042038541. The next prime is 19042038559. The reversal of 19042038556 is 65583024091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19042038559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6741520 + ... + 6744343.

It is an arithmetic number, because the mean of its divisors is an integer number (2784830916).

Almost surely, 2^19042038556 is an apocalyptic number.

It is an amenable number.

19042038556 is a deficient number, since it is larger than the sum of its proper divisors (14375932436).

19042038556 is a wasteful number, since it uses less digits than its factorization.

19042038556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13486220 (or 13486218 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 19042038556 in words is "nineteen billion, forty-two million, thirty-eight thousand, five hundred fifty-six".