19129434556 has 6 divisors (see below), whose sum is σ = 33476510480. Its totient is φ = 9564717276.

The previous prime is 19129434521. The next prime is 19129434589. The reversal of 19129434556 is 65543492191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2391179316 + ... + 2391179323.

Almost surely, 2^19129434556 is an apocalyptic number.

It is an amenable number.

19129434556 is a deficient number, since it is larger than the sum of its proper divisors (14347075924).

19129434556 is a wasteful number, since it uses less digits than its factorization.

19129434556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782358643 (or 4782358641 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 49.

The spelling of 19129434556 in words is "nineteen billion, one hundred twenty-nine million, four hundred thirty-four thousand, five hundred fifty-six".