851308085 has 16 divisors (see below), whose sum is σ = 1074142080. Its totient is φ = 646451520.

The previous prime is 851308063. The next prime is 851308103. The reversal of 851308085 is 580803158.

It is not a de Polignac number, because 851308085 - 2¹⁶ = 851242549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13190 + ... + 43319.

It is an arithmetic number, because the mean of its divisors is an integer number (67133880).

Almost surely, 2^851308085 is an apocalyptic number.

It is an amenable number.

851308085 is a deficient number, since it is larger than the sum of its proper divisors (222833995).

851308085 is a wasteful number, since it uses less digits than its factorization.

851308085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56668.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 851308085 is about 29177.1843226861. The cubic root of 851308085 is about 947.7539125916.

The spelling of 851308085 in words is "eight hundred fifty-one million, three hundred eight thousand, eighty-five".