6800861813 has 2 divisors, whose sum is σ = 6800861814. Its totient is φ = 6800861812.

The previous prime is 6800861807. The next prime is 6800861827. The reversal of 6800861813 is 3181680086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5394461809 + 1406400004 = 73447^2 + 37502^2 .

It is a cyclic number.

It is not a de Polignac number, because 6800861813 - 2⁴ = 6800861797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6800861213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3400430906 + 3400430907.

It is an arithmetic number, because the mean of its divisors is an integer number (3400430907).

Almost surely, 2^6800861813 is an apocalyptic number.

It is an amenable number.

6800861813 is a deficient number, since it is larger than the sum of its proper divisors (1).

6800861813 is an equidigital number, since it uses as much as digits as its factorization.

6800861813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 6800861813 is about 82467.3378556626. The cubic root of 6800861813 is about 1894.6165070773.

The spelling of 6800861813 in words is "six billion, eight hundred million, eight hundred sixty-one thousand, eight hundred thirteen".