6813738871 has 2 divisors, whose sum is σ = 6813738872. Its totient is φ = 6813738870.

The previous prime is 6813738853. The next prime is 6813738887. The reversal of 6813738871 is 1788373186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6813738871 - 2⁹ = 6813738359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6813738851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3406869435 + 3406869436.

It is an arithmetic number, because the mean of its divisors is an integer number (3406869436).

Almost surely, 2^6813738871 is an apocalyptic number.

6813738871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6813738871 is an equidigital number, since it uses as much as digits as its factorization.

6813738871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 52.

The square root of 6813738871 is about 82545.3746190542. The cubic root of 6813738871 is about 1895.8115372228.

The spelling of 6813738871 in words is "six billion, eight hundred thirteen million, seven hundred thirty-eight thousand, eight hundred seventy-one".