6851851845 has 24 divisors (see below), whose sum is σ = 11267301024. Its totient is φ = 3555544896.

The previous prime is 6851851843. The next prime is 6851851847. The reversal of 6851851845 is 5481581586.

It is an interprime number because it is at equal distance from previous prime (6851851843) and next prime (6851851847).

It is not a de Polignac number, because 6851851845 - 2¹ = 6851851843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6851851843) 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 23 ways as a sum of consecutive naturals, for example, 146299 + ... + 187368.

It is an arithmetic number, because the mean of its divisors is an integer number (469470876).

Almost surely, 2^6851851845 is an apocalyptic number.

It is an amenable number.

6851851845 is a deficient number, since it is larger than the sum of its proper divisors (4415449179).

6851851845 is a wasteful number, since it uses less digits than its factorization.

6851851845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333749 (or 333712 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 51.

The square root of 6851851845 is about 82775.9134350084. The cubic root of 6851851845 is about 1899.3397378019.

The spelling of 6851851845 in words is "six billion, eight hundred fifty-one million, eight hundred fifty-one thousand, eight hundred forty-five".