2605835109 has 4 divisors (see below), whose sum is σ = 3474446816. Its totient is φ = 1737223404.

The previous prime is 2605835081. The next prime is 2605835129. The reversal of 2605835109 is 9015385062.

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 not a de Polignac number, because 2605835109 - 2²⁸ = 2337399653 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 (2605835129) 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, 434305849 + ... + 434305854.

It is an arithmetic number, because the mean of its divisors is an integer number (868611704).

Almost surely, 2^2605835109 is an apocalyptic number.

It is an amenable number.

2605835109 is a deficient number, since it is larger than the sum of its proper divisors (868611707).

2605835109 is an equidigital number, since it uses as much as digits as its factorization.

2605835109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868611706.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 2605835109 is about 51047.3810199897. The cubic root of 2605835109 is about 1376.0967749915.

The spelling of 2605835109 in words is "two billion, six hundred five million, eight hundred thirty-five thousand, one hundred nine".