6831685249 has 4 divisors (see below), whose sum is σ = 6927906240. Its totient is φ = 6735464260.

The previous prime is 6831685241. The next prime is 6831685253. The reversal of 6831685249 is 9425861386.

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 6831685249 - 2³ = 6831685241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6831685196 and 6831685205.

It is not an unprimeable number, because it can be changed into a prime (6831685241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48110389 + ... + 48110530.

It is an arithmetic number, because the mean of its divisors is an integer number (1731976560).

Almost surely, 2^6831685249 is an apocalyptic number.

It is an amenable number.

6831685249 is a deficient number, since it is larger than the sum of its proper divisors (96220991).

6831685249 is an equidigital number, since it uses as much as digits as its factorization.

6831685249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96220990.

The product of its digits is 2488320, while the sum is 52.

The square root of 6831685249 is about 82654.0092735979. The cubic root of 6831685249 is about 1897.4745069114.

The spelling of 6831685249 in words is "six billion, eight hundred thirty-one million, six hundred eighty-five thousand, two hundred forty-nine".