8133165909 has 32 divisors (see below), whose sum is σ = 13265155200. Its totient is φ = 4883950080.

The previous prime is 8133165853. The next prime is 8133165961. The reversal of 8133165909 is 9095613318.

It is not a de Polignac number, because 8133165909 - 2¹¹ = 8133163861 is a prime.

It is a super-2 number, since 2×8133165909² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8133161909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93244 + ... + 157989.

It is an arithmetic number, because the mean of its divisors is an integer number (414536100).

Almost surely, 2^8133165909 is an apocalyptic number.

It is an amenable number.

8133165909 is a deficient number, since it is larger than the sum of its proper divisors (5131989291).

8133165909 is a wasteful number, since it uses less digits than its factorization.

8133165909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251362 (or 251356 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 8133165909 is about 90184.0668244674. The cubic root of 8133165909 is about 2011.0361487796.

The spelling of 8133165909 in words is "eight billion, one hundred thirty-three million, one hundred sixty-five thousand, nine hundred nine".