12750194189 has 4 divisors (see below), whose sum is σ = 12750424860. Its totient is φ = 12749963520.

The previous prime is 12750194183. The next prime is 12750194251. The reversal of 12750194189 is 98149105721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98149105721 = 37 ⋅2652678533.

It can be written as a sum of positive squares in 2 ways, for example, as 7471009225 + 5279184964 = 86435^2 + 72658^2 .

It is a cyclic number.

It is not a de Polignac number, because 12750194189 - 2³² = 8455226893 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 (12750194183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22427 + ... + 161255.

It is an arithmetic number, because the mean of its divisors is an integer number (3187606215).

Almost surely, 2^12750194189 is an apocalyptic number.

It is an amenable number.

12750194189 is a deficient number, since it is larger than the sum of its proper divisors (230671).

12750194189 is an equidigital number, since it uses as much as digits as its factorization.

12750194189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230670.

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 12750194189 in words is "twelve billion, seven hundred fifty million, one hundred ninety-four thousand, one hundred eighty-nine".