2636804889 has 18 divisors (see below), whose sum is σ = 3914456910. Its totient is φ = 1710351936.

The previous prime is 2636804843. The next prime is 2636804897. The reversal of 2636804889 is 9884086362.

2636804889 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 3 ways, for example, as 850305600 + 1786499289 = 29160^2 + 42267^2 .

It is not a de Polignac number, because 2636804889 - 2⁷ = 2636804761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2636804809) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 94684 + ... + 119325.

Almost surely, 2^2636804889 is an apocalyptic number.

It is an amenable number.

2636804889 is a deficient number, since it is larger than the sum of its proper divisors (1277652021).

2636804889 is a wasteful number, since it uses less digits than its factorization.

2636804889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214089 (or 214049 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The square root of 2636804889 is about 51349.8285196747. The cubic root of 2636804889 is about 1381.5268560356.

The spelling of 2636804889 in words is "two billion, six hundred thirty-six million, eight hundred four thousand, eight hundred eighty-nine".