8871841691 has 2 divisors, whose sum is σ = 8871841692. Its totient is φ = 8871841690.

The previous prime is 8871841679. The next prime is 8871841723. The reversal of 8871841691 is 1961481788.

8871841691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8871841691 - 2¹⁴ = 8871825307 is a prime.

It is not a weakly prime, because it can be changed into another prime (8871841631) 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, 4435920845 + 4435920846.

It is an arithmetic number, because the mean of its divisors is an integer number (4435920846).

Almost surely, 2^8871841691 is an apocalyptic number.

8871841691 is a deficient number, since it is larger than the sum of its proper divisors (1).

8871841691 is an equidigital number, since it uses as much as digits as its factorization.

8871841691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 53.

The square root of 8871841691 is about 94190.4543518079. The cubic root of 8871841691 is about 2070.1632496672.

The spelling of 8871841691 in words is "eight billion, eight hundred seventy-one million, eight hundred forty-one thousand, six hundred ninety-one".