6731157847 has 2 divisors, whose sum is σ = 6731157848. Its totient is φ = 6731157846.

The previous prime is 6731157799. The next prime is 6731157857. The reversal of 6731157847 is 7487511376.

6731157847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6731157847 is a prime.

It is a super-2 number, since 2×6731157847² = 90616971922459350818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6731157847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6731157857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3365578923 + 3365578924.

It is an arithmetic number, because the mean of its divisors is an integer number (3365578924).

Almost surely, 2^6731157847 is an apocalyptic number.

6731157847 is a deficient number, since it is larger than the sum of its proper divisors (1).

6731157847 is an equidigital number, since it uses as much as digits as its factorization.

6731157847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 49.

The square root of 6731157847 is about 82043.6337993388. The cubic root of 6731157847 is about 1888.1214453106.

The spelling of 6731157847 in words is "six billion, seven hundred thirty-one million, one hundred fifty-seven thousand, eight hundred forty-seven".