2856169165 has 8 divisors (see below), whose sum is σ = 3474354168. Its totient is φ = 2253634560.

The previous prime is 2856169163. The next prime is 2856169189. The reversal of 2856169165 is 5619616582.

It can be written as a sum of positive squares in 4 ways, for example, as 1010349796 + 1845819369 = 31786^2 + 42963^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2856169165 - 2¹ = 2856169163 is a prime.

It is a super-3 number, since 3×2856169165³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856169163) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3912196 + ... + 3912925.

It is an arithmetic number, because the mean of its divisors is an integer number (434294271).

Almost surely, 2^2856169165 is an apocalyptic number.

It is an amenable number.

2856169165 is a deficient number, since it is larger than the sum of its proper divisors (618185003).

2856169165 is an equidigital number, since it uses as much as digits as its factorization.

2856169165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7825199.

The product of its digits is 777600, while the sum is 49.

The square root of 2856169165 is about 53443.1395503670. The cubic root of 2856169165 is about 1418.8222008059.

The spelling of 2856169165 in words is "two billion, eight hundred fifty-six million, one hundred sixty-nine thousand, one hundred sixty-five".