7816488131 has 2 divisors, whose sum is σ = 7816488132. Its totient is φ = 7816488130.

The previous prime is 7816488023. The next prime is 7816488133. The reversal of 7816488131 is 1318846187.

It is a strong prime.

It is an emirp because it is prime and its reverse (1318846187) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7816488131 is a prime.

It is a super-3 number, since 3×7816488131³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 7816488133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7816488133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3908244065 + 3908244066.

It is an arithmetic number, because the mean of its divisors is an integer number (3908244066).

Almost surely, 2^7816488131 is an apocalyptic number.

7816488131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7816488131 is an equidigital number, since it uses as much as digits as its factorization.

7816488131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 47.

The square root of 7816488131 is about 88410.9050457012. The cubic root of 7816488131 is about 1984.5888982352.

The spelling of 7816488131 in words is "seven billion, eight hundred sixteen million, four hundred eighty-eight thousand, one hundred thirty-one".