2105843291 has 2 divisors, whose sum is σ = 2105843292. Its totient is φ = 2105843290.

The previous prime is 2105843279. The next prime is 2105843293. The reversal of 2105843291 is 1923485012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2105843291 - 2¹⁸ = 2105581147 is a prime.

Together with 2105843293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2105843293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052921645 + 1052921646.

It is an arithmetic number, because the mean of its divisors is an integer number (1052921646).

Almost surely, 2^2105843291 is an apocalyptic number.

2105843291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105843291 is an equidigital number, since it uses as much as digits as its factorization.

2105843291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2105843291 is about 45889.4681926038. The cubic root of 2105843291 is about 1281.7658105551.

The spelling of 2105843291 in words is "two billion, one hundred five million, eight hundred forty-three thousand, two hundred ninety-one".