8068187209 has 4 divisors (see below), whose sum is σ = 8098180740. Its totient is φ = 8038193680.

The previous prime is 8068187207. The next prime is 8068187243. The reversal of 8068187209 is 9027818608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4681296400 + 3386890809 = 68420^2 + 58197^2 .

It is a cyclic number.

It is not a de Polignac number, because 8068187209 - 2¹ = 8068187207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8068187201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14996362 + ... + 14996899.

It is an arithmetic number, because the mean of its divisors is an integer number (2024545185).

Almost surely, 2^8068187209 is an apocalyptic number.

It is an amenable number.

8068187209 is a deficient number, since it is larger than the sum of its proper divisors (29993531).

8068187209 is a wasteful number, since it uses less digits than its factorization.

8068187209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29993530.

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 8068187209 is about 89823.0883960243. The cubic root of 8068187209 is about 2005.6661993493. Note that the first 3 decimals are identical.

The spelling of 8068187209 in words is "eight billion, sixty-eight million, one hundred eighty-seven thousand, two hundred nine".