2605848653 has 2 divisors, whose sum is σ = 2605848654. Its totient is φ = 2605848652.

The previous prime is 2605848649. The next prime is 2605848659. The reversal of 2605848653 is 3568485062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2403156484 + 202692169 = 49022^2 + 14237^2 .

It is a cyclic number.

It is not a de Polignac number, because 2605848653 - 2² = 2605848649 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2605848598 and 2605848607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2605848659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302924326 + 1302924327.

It is an arithmetic number, because the mean of its divisors is an integer number (1302924327).

Almost surely, 2^2605848653 is an apocalyptic number.

It is an amenable number.

2605848653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605848653 is an equidigital number, since it uses as much as digits as its factorization.

2605848653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The square root of 2605848653 is about 51047.5136808836. The cubic root of 2605848653 is about 1376.0991591053.

The spelling of 2605848653 in words is "two billion, six hundred five million, eight hundred forty-eight thousand, six hundred fifty-three".