2091795089 has 2 divisors, whose sum is σ = 2091795090. Its totient is φ = 2091795088.

The previous prime is 2091795077. The next prime is 2091795127. The reversal of 2091795089 is 9805971902.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113356689 + 978438400 = 33367^2 + 31280^2 .

It is a cyclic number.

It is not a de Polignac number, because 2091795089 - 2⁸ = 2091794833 is a prime.

It is not a weakly prime, because it can be changed into another prime (2091795289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045897544 + 1045897545.

It is an arithmetic number, because the mean of its divisors is an integer number (1045897545).

Almost surely, 2^2091795089 is an apocalyptic number.

It is an amenable number.

2091795089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091795089 is an equidigital number, since it uses as much as digits as its factorization.

2091795089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 50.

The square root of 2091795089 is about 45736.1464161554. The cubic root of 2091795089 is about 1278.9092043724.

The spelling of 2091795089 in words is "two billion, ninety-one million, seven hundred ninety-five thousand, eighty-nine".