2605057189 has 4 divisors (see below), whose sum is σ = 2977208224. Its totient is φ = 2232906156.

The previous prime is 2605057183. The next prime is 2605057201. The reversal of 2605057189 is 9817505062.

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 2605057189 - 2⁵ = 2605057157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605057183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186075507 + ... + 186075520.

It is an arithmetic number, because the mean of its divisors is an integer number (744302056).

Almost surely, 2^2605057189 is an apocalyptic number.

It is an amenable number.

2605057189 is a deficient number, since it is larger than the sum of its proper divisors (372151035).

2605057189 is an equidigital number, since it uses as much as digits as its factorization.

2605057189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372151034.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 2605057189 is about 51039.7608634680. The cubic root of 2605057189 is about 1375.9598259648.

The spelling of 2605057189 in words is "two billion, six hundred five million, fifty-seven thousand, one hundred eighty-nine".