8131504916 has 24 divisors (see below), whose sum is σ = 14853035904. Its totient is φ = 3887880480.

The previous prime is 8131504907. The next prime is 8131504919. The reversal of 8131504916 is 6194051318.

It is a super-2 number, since 2×8131504916² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8131504916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8131504919) 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, 381641 + ... + 402383.

It is an arithmetic number, because the mean of its divisors is an integer number (618876496).

Almost surely, 2^8131504916 is an apocalyptic number.

It is an amenable number.

8131504916 is a deficient number, since it is larger than the sum of its proper divisors (6721530988).

8131504916 is a wasteful number, since it uses less digits than its factorization.

8131504916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25031 (or 25029 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 8131504916 is about 90174.8574492913. The cubic root of 8131504916 is about 2010.8992384046.

The spelling of 8131504916 in words is "eight billion, one hundred thirty-one million, five hundred four thousand, nine hundred sixteen".