2105907847 has 2 divisors, whose sum is σ = 2105907848. Its totient is φ = 2105907846.

The previous prime is 2105907833. The next prime is 2105907851. The reversal of 2105907847 is 7487095012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2105907847 - 2⁷ = 2105907719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105907857) 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, 1052953923 + 1052953924.

It is an arithmetic number, because the mean of its divisors is an integer number (1052953924).

Almost surely, 2^2105907847 is an apocalyptic number.

2105907847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105907847 is an equidigital number, since it uses as much as digits as its factorization.

2105907847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 2105907847 is about 45890.1715730068. The cubic root of 2105907847 is about 1281.7789082103.

The spelling of 2105907847 in words is "two billion, one hundred five million, nine hundred seven thousand, eight hundred forty-seven".