6805413893 has 4 divisors (see below), whose sum is σ = 6869016000. Its totient is φ = 6741811788.

The previous prime is 6805413887. The next prime is 6805413991. The reversal of 6805413893 is 3983145086.

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 a de Polignac number, because none of the positive numbers 2^k-6805413893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6805415893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31800893 + ... + 31801106.

It is an arithmetic number, because the mean of its divisors is an integer number (1717254000).

Almost surely, 2^6805413893 is an apocalyptic number.

It is an amenable number.

6805413893 is a deficient number, since it is larger than the sum of its proper divisors (63602107).

6805413893 is a wasteful number, since it uses less digits than its factorization.

6805413893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63602106.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 6805413893 is about 82494.9325292166. The cubic root of 6805413893 is about 1895.0391261824.

The spelling of 6805413893 in words is "six billion, eight hundred five million, four hundred thirteen thousand, eight hundred ninety-three".