19229349887 has 12 divisors (see below), whose sum is σ = 21196316400. Its totient is φ = 17431666560.

The previous prime is 19229349833. The next prime is 19229349917. The reversal of 19229349887 is 78894392291.

It is not a de Polignac number, because 19229349887 - 2³⁰ = 18155608063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19229346887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182387 + ... + 267812.

It is an arithmetic number, because the mean of its divisors is an integer number (1766359700).

Almost surely, 2^19229349887 is an apocalyptic number.

19229349887 is a deficient number, since it is larger than the sum of its proper divisors (1966966513).

19229349887 is a wasteful number, since it uses less digits than its factorization.

19229349887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450574 (or 450563 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 62.

The spelling of 19229349887 in words is "nineteen billion, two hundred twenty-nine million, three hundred forty-nine thousand, eight hundred eighty-seven".