19434275189 has 6 divisors (see below), whose sum is σ = 22607218134. Its totient is φ = 16657950120.

The previous prime is 19434275183. The next prime is 19434275213. The reversal of 19434275189 is 98157243491.

It can be written as a sum of positive squares in only one way, i.e., 19258500625 + 175774564 = 138775^2 + 13258^2 .

It is not a de Polignac number, because 19434275189 - 2²⁰ = 19433226613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19434275189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19434275183) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 198308882 + ... + 198308979.

It is an arithmetic number, because the mean of its divisors is an integer number (3767869689).

Almost surely, 2^19434275189 is an apocalyptic number.

It is an amenable number.

19434275189 is a deficient number, since it is larger than the sum of its proper divisors (3172942945).

19434275189 is an equidigital number, since it uses as much as digits as its factorization.

19434275189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396617875 (or 396617868 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The spelling of 19434275189 in words is "nineteen billion, four hundred thirty-four million, two hundred seventy-five thousand, one hundred eighty-nine".