851165361 has 8 divisors (see below), whose sum is σ = 1260985760. Its totient is φ = 567443556.

The previous prime is 851165321. The next prime is 851165369. The reversal of 851165361 is 163561158.

851165361 is a `hidden beast` number, since 8 + 5 + 116 + 536 + 1 = 666.

851165361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 851165361 - 2⁶ = 851165297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (851165369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15762295 + ... + 15762348.

It is an arithmetic number, because the mean of its divisors is an integer number (157623220).

Almost surely, 2^851165361 is an apocalyptic number.

It is an amenable number.

851165361 is a deficient number, since it is larger than the sum of its proper divisors (409820399).

851165361 is a wasteful number, since it uses less digits than its factorization.

851165361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31524652 (or 31524646 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 851165361 is about 29174.7384049969. The cubic root of 851165361 is about 947.7009451674.

The spelling of 851165361 in words is "eight hundred fifty-one million, one hundred sixty-five thousand, three hundred sixty-one".