2605340189 has 2 divisors, whose sum is σ = 2605340190. Its totient is φ = 2605340188.

The previous prime is 2605340159. The next prime is 2605340209. The reversal of 2605340189 is 9810435062.

It is a happy number.

2605340189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2564916025 + 40424164 = 50645^2 + 6358^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605340189 - 2²⁴ = 2588562973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2605340149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302670094 + 1302670095.

It is an arithmetic number, because the mean of its divisors is an integer number (1302670095).

Almost surely, 2^2605340189 is an apocalyptic number.

It is an amenable number.

2605340189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605340189 is an equidigital number, since it uses as much as digits as its factorization.

2605340189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2605340189 is about 51042.5331365911. The cubic root of 2605340189 is about 1376.0096498909.

The spelling of 2605340189 in words is "two billion, six hundred five million, three hundred forty thousand, one hundred eighty-nine".