2091795085 has 16 divisors (see below), whose sum is σ = 2600385840. Its totient is φ = 1613445120.

The previous prime is 2091795077. The next prime is 2091795089. The reversal of 2091795085 is 5805971902.

It can be written as a sum of positive squares in 8 ways, for example, as 644601321 + 1447193764 = 25389^2 + 38042^2 .

It is not a de Polignac number, because 2091795085 - 2³ = 2091795077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091795089) 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, 96445 + ... + 116125.

It is an arithmetic number, because the mean of its divisors is an integer number (162524115).

Almost surely, 2^2091795085 is an apocalyptic number.

It is an amenable number.

2091795085 is a deficient number, since it is larger than the sum of its proper divisors (508590755).

2091795085 is a wasteful number, since it uses less digits than its factorization.

2091795085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20448.

The product of its (nonzero) digits is 226800, while the sum is 46.

The square root of 2091795085 is about 45736.1463724263. The cubic root of 2091795085 is about 1278.9092035572.

The spelling of 2091795085 in words is "two billion, ninety-one million, seven hundred ninety-five thousand, eighty-five".