851121170 has 16 divisors (see below), whose sum is σ = 1560925080. Its totient is φ = 334024704.

The previous prime is 851121157. The next prime is 851121211. The reversal of 851121170 is 71121158.

It can be written as a sum of positive squares in 4 ways, for example, as 681157801 + 169963369 = 26099^2 + 13037^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 802415 + ... + 803474.

Almost surely, 2^851121170 is an apocalyptic number.

851121170 is a deficient number, since it is larger than the sum of its proper divisors (709803910).

851121170 is a wasteful number, since it uses less digits than its factorization.

851121170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605949.

The product of its (nonzero) digits is 560, while the sum is 26.

The square root of 851121170 is about 29173.9810447597. The cubic root of 851121170 is about 947.6845438979.

The spelling of 851121170 in words is "eight hundred fifty-one million, one hundred twenty-one thousand, one hundred seventy".