856183149 has 32 divisors (see below), whose sum is σ = 1344896000. Its totient is φ = 536812272.

The previous prime is 856183117. The next prime is 856183169. The reversal of 856183149 is 941381658.

856183149 is a `hidden beast` number, since 8 + 561 + 83 + 1 + 4 + 9 = 666.

It is not a de Polignac number, because 856183149 - 2⁵ = 856183117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856183109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65304 + ... + 77310.

It is an arithmetic number, because the mean of its divisors is an integer number (42028000).

Almost surely, 2^856183149 is an apocalyptic number.

It is an amenable number.

856183149 is a deficient number, since it is larger than the sum of its proper divisors (488712851).

856183149 is a wasteful number, since it uses less digits than its factorization.

856183149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12174 (or 12168 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 856183149 is about 29260.6074612268. The cubic root of 856183149 is about 949.5595923555.

The spelling of 856183149 in words is "eight hundred fifty-six million, one hundred eighty-three thousand, one hundred forty-nine".