12423919189 has 4 divisors (see below), whose sum is σ = 13553366400. Its totient is φ = 11294471980.

The previous prime is 12423919187. The next prime is 12423919217. The reversal of 12423919189 is 98191932421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12423919189 - 2¹ = 12423919187 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423919181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564723589 + ... + 564723610.

It is an arithmetic number, because the mean of its divisors is an integer number (3388341600).

Almost surely, 2^12423919189 is an apocalyptic number.

It is an amenable number.

12423919189 is a deficient number, since it is larger than the sum of its proper divisors (1129447211).

12423919189 is a wasteful number, since it uses less digits than its factorization.

12423919189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129447210.

The product of its digits is 279936, while the sum is 49.

The spelling of 12423919189 in words is "twelve billion, four hundred twenty-three million, nine hundred nineteen thousand, one hundred eighty-nine".