2105411491 has 2 divisors, whose sum is σ = 2105411492. Its totient is φ = 2105411490.

The previous prime is 2105411447. The next prime is 2105411507. The reversal of 2105411491 is 1941145012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2105411491 - 2¹³ = 2105403299 is a prime.

It is not a weakly prime, because it can be changed into another prime (2105411411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052705745 + 1052705746.

It is an arithmetic number, because the mean of its divisors is an integer number (1052705746).

Almost surely, 2^2105411491 is an apocalyptic number.

2105411491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105411491 is an equidigital number, since it uses as much as digits as its factorization.

2105411491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 2105411491 is about 45884.7631681803. The cubic root of 2105411491 is about 1281.6781965158.

The spelling of 2105411491 in words is "two billion, one hundred five million, four hundred eleven thousand, four hundred ninety-one".