8130979871 has 16 divisors (see below), whose sum is σ = 9808934400. Its totient is φ = 6584169888.

The previous prime is 8130979859. The next prime is 8130979873. The reversal of 8130979871 is 1789790318.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8130979871 is a prime.

It is a super-2 number, since 2×8130979871² (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 (8130979873) 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 15 ways as a sum of consecutive naturals, for example, 37400 + ... + 132893.

It is an arithmetic number, because the mean of its divisors is an integer number (613058400).

Almost surely, 2^8130979871 is an apocalyptic number.

8130979871 is a deficient number, since it is larger than the sum of its proper divisors (1677954529).

8130979871 is a wasteful number, since it uses less digits than its factorization.

8130979871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170678.

The product of its (nonzero) digits is 762048, while the sum is 53.

The square root of 8130979871 is about 90171.9461418018. The cubic root of 8130979871 is about 2010.8559567355.

The spelling of 8130979871 in words is "eight billion, one hundred thirty million, nine hundred seventy-nine thousand, eight hundred seventy-one".