8500169169 has 6 divisors (see below), whose sum is σ = 12278022146. Its totient is φ = 5666779440.

The previous prime is 8500169113. The next prime is 8500169189. The reversal of 8500169169 is 9619610058.

It can be written as a sum of positive squares in only one way, i.e., 7900898769 + 599270400 = 88887^2 + 24480^2 .

It is not a de Polignac number, because 8500169169 - 2¹¹ = 8500167121 is a prime.

It is a super-2 number, since 2×8500169169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8500169189) 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, 472231612 + ... + 472231629.

Almost surely, 2^8500169169 is an apocalyptic number.

It is an amenable number.

8500169169 is a deficient number, since it is larger than the sum of its proper divisors (3777852977).

8500169169 is a wasteful number, since it uses less digits than its factorization.

8500169169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944463247 (or 944463244 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 8500169169 is about 92196.3620160796. The cubic root of 8500169169 is about 2040.8410898789.

The spelling of 8500169169 in words is "eight billion, five hundred million, one hundred sixty-nine thousand, one hundred sixty-nine".