8202806813 has 4 divisors (see below), whose sum is σ = 8207990208. Its totient is φ = 8197623420.

The previous prime is 8202806791. The next prime is 8202806827. The reversal of 8202806813 is 3186082028.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8202806813 - 2¹² = 8202802717 is a prime.

It is a super-2 number, since 2×8202806813² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8202800813) 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 3 ways as a sum of consecutive naturals, for example, 2589323 + ... + 2592488.

It is an arithmetic number, because the mean of its divisors is an integer number (2051997552).

Almost surely, 2^8202806813 is an apocalyptic number.

It is an amenable number.

8202806813 is a deficient number, since it is larger than the sum of its proper divisors (5183395).

8202806813 is a wasteful number, since it uses less digits than its factorization.

8202806813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183394.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 8202806813 is about 90569.3480875290. The cubic root of 8202806813 is about 2016.7597311544.

The spelling of 8202806813 in words is "eight billion, two hundred two million, eight hundred six thousand, eight hundred thirteen".