19432839258 has 24 divisors (see below), whose sum is σ = 48119411808. Its totient is φ = 5552239752.

The previous prime is 19432839197. The next prime is 19432839317. The reversal of 19432839258 is 85293823491.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77114316 + ... + 77114567.

It is an arithmetic number, because the mean of its divisors is an integer number (2004975492).

Almost surely, 2^19432839258 is an apocalyptic number.

19432839258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19432839258 is an abundant number, since it is smaller than the sum of its proper divisors (28686572550).

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

19432839258 is a wasteful number, since it uses less digits than its factorization.

19432839258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154228898 (or 154228895 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

It can be divided in two parts, 194328 and 39258, that added together give a triangular number (233586 = T₆₈₃).

The spelling of 19432839258 in words is "nineteen billion, four hundred thirty-two million, eight hundred thirty-nine thousand, two hundred fifty-eight".