2086091885 has 8 divisors (see below), whose sum is σ = 2505768216. Its totient is φ = 1667234880.

The previous prime is 2086091869. The next prime is 2086091899. The reversal of 2086091885 is 5881906802.

It can be written as a sum of positive squares in 4 ways, for example, as 619661449 + 1466430436 = 24893^2 + 38294^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2086091885 - 2⁴ = 2086091869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199214 + ... + 209423.

It is an arithmetic number, because the mean of its divisors is an integer number (313221027).

Almost surely, 2^2086091885 is an apocalyptic number.

It is an amenable number.

2086091885 is a deficient number, since it is larger than the sum of its proper divisors (419676331).

2086091885 is a wasteful number, since it uses less digits than its factorization.

2086091885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409663.

The product of its (nonzero) digits is 276480, while the sum is 47.

The square root of 2086091885 is about 45673.7548817699. The cubic root of 2086091885 is about 1277.7458464792.

The spelling of 2086091885 in words is "two billion, eighty-six million, ninety-one thousand, eight hundred eighty-five".