6813807841 has 2 divisors, whose sum is σ = 6813807842. Its totient is φ = 6813807840.

The previous prime is 6813807761. The next prime is 6813807857. The reversal of 6813807841 is 1487083186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6802785441 + 11022400 = 82479^2 + 3320^2 .

It is a cyclic number.

It is not a de Polignac number, because 6813807841 - 2¹³ = 6813799649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6813807791 and 6813807800.

It is not a weakly prime, because it can be changed into another prime (6813807241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3406903920 + 3406903921.

It is an arithmetic number, because the mean of its divisors is an integer number (3406903921).

Almost surely, 2^6813807841 is an apocalyptic number.

It is an amenable number.

6813807841 is a deficient number, since it is larger than the sum of its proper divisors (1).

6813807841 is an equidigital number, since it uses as much as digits as its factorization.

6813807841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 6813807841 is about 82545.7923882253. The cubic root of 6813807841 is about 1895.8179337931.

The spelling of 6813807841 in words is "six billion, eight hundred thirteen million, eight hundred seven thousand, eight hundred forty-one".