6843210813 has 6 divisors (see below), whose sum is σ = 9884637854. Its totient is φ = 4562140536.

The previous prime is 6843210811. The next prime is 6843210833. The reversal of 6843210813 is 3180123486.

6843210813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4001574564 + 2841636249 = 63258^2 + 53307^2 .

It is not a de Polignac number, because 6843210813 - 2¹ = 6843210811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6843210811) 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 in 5 ways as a sum of consecutive naturals, for example, 380178370 + ... + 380178387.

Almost surely, 2^6843210813 is an apocalyptic number.

It is an amenable number.

6843210813 is a deficient number, since it is larger than the sum of its proper divisors (3041427041).

6843210813 is a wasteful number, since it uses less digits than its factorization.

6843210813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760356763 (or 760356760 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 6843210813 is about 82723.7016398565. The cubic root of 6843210813 is about 1898.5409678753.

The spelling of 6843210813 in words is "six billion, eight hundred forty-three million, two hundred ten thousand, eight hundred thirteen".