8189434631 has 12 divisors (see below), whose sum is σ = 9527991408. Its totient is φ = 7018405632.

The previous prime is 8189434619. The next prime is 8189434637. The reversal of 8189434631 is 1364349818.

It is not a de Polignac number, because 8189434631 - 2¹⁰ = 8189433607 is a prime.

It is a super-2 number, since 2×8189434631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8189434637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505895 + ... + 521831.

It is an arithmetic number, because the mean of its divisors is an integer number (793999284).

Almost surely, 2^8189434631 is an apocalyptic number.

8189434631 is a deficient number, since it is larger than the sum of its proper divisors (1338556777).

8189434631 is a wasteful number, since it uses less digits than its factorization.

8189434631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26438 (or 26431 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 8189434631 is about 90495.4950867721. The cubic root of 8189434631 is about 2015.6632306227.

The spelling of 8189434631 in words is "eight billion, one hundred eighty-nine million, four hundred thirty-four thousand, six hundred thirty-one".