8273564209 has 16 divisors (see below), whose sum is σ = 8875609344. Its totient is φ = 7693100800.

The previous prime is 8273564203. The next prime is 8273564213. The reversal of 8273564209 is 9024653728.

It is a cyclic number.

It is not a de Polignac number, because 8273564209 - 2¹¹ = 8273562161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8273564203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249372 + ... + 280594.

It is an arithmetic number, because the mean of its divisors is an integer number (554725584).

Almost surely, 2^8273564209 is an apocalyptic number.

It is an amenable number.

8273564209 is a deficient number, since it is larger than the sum of its proper divisors (602045135).

8273564209 is a wasteful number, since it uses less digits than its factorization.

8273564209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31568.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 8273564209 is about 90959.1348298784. The cubic root of 8273564209 is about 2022.5419921679.

The spelling of 8273564209 in words is "eight billion, two hundred seventy-three million, five hundred sixty-four thousand, two hundred nine".