4161191 has 2 divisors, whose sum is σ = 4161192. Its totient is φ = 4161190.

The previous prime is 4161187. The next prime is 4161193. The reversal of 4161191 is 1911614.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4161191 - 2² = 4161187 is a prime.

It is a Sophie Germain prime.

Together with 4161193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4161193) 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, 2080595 + 2080596.

It is an arithmetic number, because the mean of its divisors is an integer number (2080596).

Almost surely, 2^4161191 is an apocalyptic number.

4161191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4161191 is an equidigital number, since it uses as much as digits as its factorization.

4161191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 23.

The square root of 4161191 is about 2039.8997524388. The cubic root of 4161191 is about 160.8443772264.

The spelling of 4161191 in words is "four million, one hundred sixty-one thousand, one hundred ninety-one".