4781191 has 2 divisors, whose sum is σ = 4781192. Its totient is φ = 4781190.

The previous prime is 4781173. The next prime is 4781197. The reversal of 4781191 is 1911874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4781191 - 2¹¹ = 4779143 is a prime.

It is an Ulam number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4781197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2390595 + 2390596.

It is an arithmetic number, because the mean of its divisors is an integer number (2390596).

Almost surely, 2^4781191 is an apocalyptic number.

4781191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4781191 is an equidigital number, since it uses as much as digits as its factorization.

4781191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 31.

The square root of 4781191 is about 2186.5934693033. The cubic root of 4781191 is about 168.4659095653.

The spelling of 4781191 in words is "four million, seven hundred eighty-one thousand, one hundred ninety-one".