2591347889 has 24 divisors (see below), whose sum is σ = 2961586152. Its totient is φ = 2253588480.

The previous prime is 2591347841. The next prime is 2591347901. The reversal of 2591347889 is 9887431952.

2591347889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 21669025 + 2569678864 = 4655^2 + 50692^2 .

It is not a de Polignac number, because 2591347889 - 2¹² = 2591343793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2591347189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 904319 + ... + 907179.

It is an arithmetic number, because the mean of its divisors is an integer number (123399423).

Almost surely, 2^2591347889 is an apocalyptic number.

It is an amenable number.

2591347889 is a deficient number, since it is larger than the sum of its proper divisors (370238263).

2591347889 is a wasteful number, since it uses less digits than its factorization.

2591347889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105 (or 3086 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 56.

The square root of 2591347889 is about 50905.2835077067. The cubic root of 2591347889 is about 1373.5418837554.

The spelling of 2591347889 in words is "two billion, five hundred ninety-one million, three hundred forty-seven thousand, eight hundred eighty-nine".