2086809265 has 4 divisors (see below), whose sum is σ = 2504171124. Its totient is φ = 1669447408.

The previous prime is 2086809229. The next prime is 2086809281. The reversal of 2086809265 is 5629086802.

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 1336706721 + 750102544 = 36561^2 + 27388^2 .

It is a cyclic number.

It is not a de Polignac number, because 2086809265 - 2⁹ = 2086808753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208680922 + ... + 208680931.

It is an arithmetic number, because the mean of its divisors is an integer number (626042781).

Almost surely, 2^2086809265 is an apocalyptic number.

It is an amenable number.

2086809265 is a deficient number, since it is larger than the sum of its proper divisors (417361859).

2086809265 is an equidigital number, since it uses as much as digits as its factorization.

2086809265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417361858.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 2086809265 is about 45681.6075133089. The cubic root of 2086809265 is about 1277.8922964462.

The spelling of 2086809265 in words is "two billion, eighty-six million, eight hundred nine thousand, two hundred sixty-five".