2091795087 has 4 divisors (see below), whose sum is σ = 2789060120. Its totient is φ = 1394530056.

The previous prime is 2091795077. The next prime is 2091795089. The reversal of 2091795087 is 7805971902.

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

It is not a de Polignac number, because 2091795087 - 2⁶ = 2091795023 is a prime.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348632512 + ... + 348632517.

It is an arithmetic number, because the mean of its divisors is an integer number (697265030).

Almost surely, 2^2091795087 is an apocalyptic number.

2091795087 is a deficient number, since it is larger than the sum of its proper divisors (697265033).

2091795087 is an equidigital number, since it uses as much as digits as its factorization.

2091795087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697265032.

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 2091795087 is about 45736.1463942908. The cubic root of 2091795087 is about 1278.9092039648.

The spelling of 2091795087 in words is "two billion, ninety-one million, seven hundred ninety-five thousand, eighty-seven".