2105727397 has 2 divisors, whose sum is σ = 2105727398. Its totient is φ = 2105727396.

The previous prime is 2105727367. The next prime is 2105727433. The reversal of 2105727397 is 7937275012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1477172356 + 628555041 = 38434^2 + 25071^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105727397 - 2¹⁵ = 2105694629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105727367) 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 as a sum of consecutive naturals, namely, 1052863698 + 1052863699.

It is an arithmetic number, because the mean of its divisors is an integer number (1052863699).

Almost surely, 2^2105727397 is an apocalyptic number.

It is an amenable number.

2105727397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105727397 is an equidigital number, since it uses as much as digits as its factorization.

2105727397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 2105727397 is about 45888.2054236162. The cubic root of 2105727397 is about 1281.7422963501.

The spelling of 2105727397 in words is "two billion, one hundred five million, seven hundred twenty-seven thousand, three hundred ninety-seven".