4911191 has 2 divisors, whose sum is σ = 4911192. Its totient is φ = 4911190.

The previous prime is 4911169. The next prime is 4911197. The reversal of 4911191 is 1911194.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4911191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4911191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4911197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2455595 + 2455596.

It is an arithmetic number, because the mean of its divisors is an integer number (2455596).

Almost surely, 2^4911191 is an apocalyptic number.

4911191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4911191 is an equidigital number, since it uses as much as digits as its factorization.

4911191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 26.

The square root of 4911191 is about 2216.1207097087. The cubic root of 4911191 is about 169.9791323867.

The spelling of 4911191 in words is "four million, nine hundred eleven thousand, one hundred ninety-one".