8131726747 has 2 divisors, whose sum is σ = 8131726748. Its totient is φ = 8131726746.

The previous prime is 8131726717. The next prime is 8131726753. The reversal of 8131726747 is 7476271318.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8131726747 is a prime.

It is a super-2 number, since 2×8131726747² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8131726697 and 8131726706.

It is not a weakly prime, because it can be changed into another prime (8131726717) 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 as a sum of consecutive naturals, namely, 4065863373 + 4065863374.

It is an arithmetic number, because the mean of its divisors is an integer number (4065863374).

Almost surely, 2^8131726747 is an apocalyptic number.

8131726747 is a deficient number, since it is larger than the sum of its proper divisors (1).

8131726747 is an equidigital number, since it uses as much as digits as its factorization.

8131726747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 46.

The square root of 8131726747 is about 90176.0874456194. The cubic root of 8131726747 is about 2010.9175243077.

The spelling of 8131726747 in words is "eight billion, one hundred thirty-one million, seven hundred twenty-six thousand, seven hundred forty-seven".