2086871605 has 16 divisors (see below), whose sum is σ = 3082149504. Its totient is φ = 1320920640.

The previous prime is 2086871597. The next prime is 2086871617. The reversal of 2086871605 is 5061786802.

It is not a de Polignac number, because 2086871605 - 2³ = 2086871597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2292811 + ... + 2293720.

It is an arithmetic number, because the mean of its divisors is an integer number (192634344).

Almost surely, 2^2086871605 is an apocalyptic number.

It is an amenable number.

2086871605 is a deficient number, since it is larger than the sum of its proper divisors (995277899).

2086871605 is a wasteful number, since it uses less digits than its factorization.

2086871605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586556.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 2086871605 is about 45682.2898397180. The cubic root of 2086871605 is about 1277.9050212975.

The spelling of 2086871605 in words is "two billion, eighty-six million, eight hundred seventy-one thousand, six hundred five".