8131340769 has 8 divisors (see below), whose sum is σ = 11215642560. Its totient is φ = 5233966416.

The previous prime is 8131340761. The next prime is 8131340801. The reversal of 8131340769 is 9670431318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8131340769 - 2³ = 8131340761 is a prime.

It is a super-2 number, since 2×8131340769² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8131340769.

It is not an unprimeable number, because it can be changed into a prime (8131340761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46731757 + ... + 46731930.

It is an arithmetic number, because the mean of its divisors is an integer number (1401955320).

Almost surely, 2^8131340769 is an apocalyptic number.

It is an amenable number.

8131340769 is a deficient number, since it is larger than the sum of its proper divisors (3084301791).

8131340769 is a wasteful number, since it uses less digits than its factorization.

8131340769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93463719.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 8131340769 is about 90173.9472852331. The cubic root of 8131340769 is about 2010.8857072768.

The spelling of 8131340769 in words is "eight billion, one hundred thirty-one million, three hundred forty thousand, seven hundred sixty-nine".