851870133 has 6 divisors (see below), whose sum is σ = 1230479094. Its totient is φ = 567913416.

The previous prime is 851870083. The next prime is 851870147. The reversal of 851870133 is 331078158.

851870133 is a `hidden beast` number, since 8 + 518 + 7 + 0 + 133 = 666.

It can be written as a sum of positive squares in only one way, i.e., 615387249 + 236482884 = 24807^2 + 15378^2 .

It is not a de Polignac number, because 851870133 - 2²⁰ = 850821557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851870333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47326110 + ... + 47326127.

It is an arithmetic number, because the mean of its divisors is an integer number (205079849).

Almost surely, 2^851870133 is an apocalyptic number.

It is an amenable number.

851870133 is a deficient number, since it is larger than the sum of its proper divisors (378608961).

851870133 is a wasteful number, since it uses less digits than its factorization.

851870133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94652243 (or 94652240 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 851870133 is about 29186.8143688207. The cubic root of 851870133 is about 947.9624410960.

The spelling of 851870133 in words is "eight hundred fifty-one million, eight hundred seventy thousand, one hundred thirty-three".