12931944189 has 16 divisors (see below), whose sum is σ = 18245689344. Its totient is φ = 8130306800.

The previous prime is 12931944187. The next prime is 12931944197. The reversal of 12931944189 is 98144913921.

It is not a de Polignac number, because 12931944189 - 2¹ = 12931944187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12931944187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314957 + ... + 1324754.

It is an arithmetic number, because the mean of its divisors is an integer number (1140355584).

Almost surely, 2^12931944189 is an apocalyptic number.

It is an amenable number.

12931944189 is a deficient number, since it is larger than the sum of its proper divisors (5313745155).

12931944189 is a wasteful number, since it uses less digits than its factorization.

12931944189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639808.

The product of its digits is 559872, while the sum is 51.

The spelling of 12931944189 in words is "twelve billion, nine hundred thirty-one million, nine hundred forty-four thousand, one hundred eighty-nine".