2105105279 has 2 divisors, whose sum is σ = 2105105280. Its totient is φ = 2105105278.

The previous prime is 2105105203. The next prime is 2105105297. The reversal of 2105105279 is 9725015012.

It is a happy number.

Together with next prime (2105105297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2105105279 - 2¹² = 2105101183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105105479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052552639 + 1052552640.

It is an arithmetic number, because the mean of its divisors is an integer number (1052552640).

Almost surely, 2^2105105279 is an apocalyptic number.

2105105279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105105279 is an equidigital number, since it uses as much as digits as its factorization.

2105105279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 2105105279 is about 45881.4262964873. The cubic root of 2105105279 is about 1281.6160575509.

The spelling of 2105105279 in words is "two billion, one hundred five million, one hundred five thousand, two hundred seventy-nine".