3085117857 has 48 divisors (see below), whose sum is σ = 5043886848. Its totient is φ = 1806351360.

The previous prime is 3085117787. The next prime is 3085117859. The reversal of 3085117857 is 7587115803.

It is not a de Polignac number, because 3085117857 - 2¹⁰ = 3085116833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3085117859) 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 47 ways as a sum of consecutive naturals, for example, 133588 + ... + 154970.

It is an arithmetic number, because the mean of its divisors is an integer number (105080976).

Almost surely, 2^3085117857 is an apocalyptic number.

It is an amenable number.

3085117857 is a deficient number, since it is larger than the sum of its proper divisors (1958768991).

3085117857 is a wasteful number, since it uses less digits than its factorization.

3085117857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21470 (or 21467 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 45.

The square root of 3085117857 is about 55543.8372549106. The cubic root of 3085117857 is about 1455.7626964585.

The spelling of 3085117857 in words is "three billion, eighty-five million, one hundred seventeen thousand, eight hundred fifty-seven".