8136423189 has 24 divisors (see below), whose sum is σ = 12447227520. Its totient is φ = 5308864416.

The previous prime is 8136423161. The next prime is 8136423203. The reversal of 8136423189 is 9813246318.

It is not a de Polignac number, because 8136423189 - 2⁸ = 8136422933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8136423389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 344784 + ... + 367625.

It is an arithmetic number, because the mean of its divisors is an integer number (518634480).

Almost surely, 2^8136423189 is an apocalyptic number.

It is an amenable number.

8136423189 is a deficient number, since it is larger than the sum of its proper divisors (4310804331).

8136423189 is an equidigital number, since it uses as much as digits as its factorization.

8136423189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712471 (or 712459 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 8136423189 is about 90202.1240825292. The cubic root of 8136423189 is about 2011.3045819095.

The spelling of 8136423189 in words is "eight billion, one hundred thirty-six million, four hundred twenty-three thousand, one hundred eighty-nine".