2091071089 has 4 divisors (see below), whose sum is σ = 2091962880. Its totient is φ = 2090179300.

The previous prime is 2091071039. The next prime is 2091071093. The reversal of 2091071089 is 9801701902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2091071089 - 2²¹ = 2088973937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2091071029) 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, 442369 + ... + 447070.

It is an arithmetic number, because the mean of its divisors is an integer number (522990720).

Almost surely, 2^2091071089 is an apocalyptic number.

It is an amenable number.

2091071089 is a deficient number, since it is larger than the sum of its proper divisors (891791).

2091071089 is an equidigital number, since it uses as much as digits as its factorization.

2091071089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891790.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 2091071089 is about 45728.2307661252. The cubic root of 2091071089 is about 1278.7616377974.

The spelling of 2091071089 in words is "two billion, ninety-one million, seventy-one thousand, eighty-nine".