4166191 has 2 divisors, whose sum is σ = 4166192. Its totient is φ = 4166190.

The previous prime is 4166177. The next prime is 4166203. The reversal of 4166191 is 1916614.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4166191 - 2⁵ = 4166159 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4166101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083095 + 2083096.

It is an arithmetic number, because the mean of its divisors is an integer number (2083096).

Almost surely, 2^4166191 is an apocalyptic number.

4166191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4166191 is an equidigital number, since it uses as much as digits as its factorization.

4166191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 4166191 is about 2041.1249349317. The cubic root of 4166191 is about 160.9087738530.

The spelling of 4166191 in words is "four million, one hundred sixty-six thousand, one hundred ninety-one".