6853685849 has 4 divisors (see below), whose sum is σ = 7013073936. Its totient is φ = 6694297764.

The previous prime is 6853685837. The next prime is 6853685869. The reversal of 6853685849 is 9485863586.

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 6853685849 - 2¹⁶ = 6853620313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6853685791 and 6853685800.

It is not an unprimeable number, because it can be changed into a prime (6853685819) 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, 79693979 + ... + 79694064.

It is an arithmetic number, because the mean of its divisors is an integer number (1753268484).

Almost surely, 2^6853685849 is an apocalyptic number.

It is an amenable number.

6853685849 is a deficient number, since it is larger than the sum of its proper divisors (159388087).

6853685849 is a wasteful number, since it uses less digits than its factorization.

6853685849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159388086.

The product of its digits is 49766400, while the sum is 62.

The square root of 6853685849 is about 82786.9908198142. The cubic root of 6853685849 is about 1899.5091852256.

The spelling of 6853685849 in words is "six billion, eight hundred fifty-three million, six hundred eighty-five thousand, eight hundred forty-nine".