4181819 has 2 divisors, whose sum is σ = 4181820. Its totient is φ = 4181818.

The previous prime is 4181797. The next prime is 4181839. The reversal of 4181819 is 9181814.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4181819 - 2²⁰ = 3133243 is a prime.

It is a super-2 number, since 2×4181819² = 34975220297522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4181839) 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, 2090909 + 2090910.

It is an arithmetic number, because the mean of its divisors is an integer number (2090910).

Almost surely, 2^4181819 is an apocalyptic number.

4181819 is a deficient number, since it is larger than the sum of its proper divisors (1).

4181819 is an equidigital number, since it uses as much as digits as its factorization.

4181819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 32.

The square root of 4181819 is about 2044.9496326316. The cubic root of 4181819 is about 161.1097203562.

The spelling of 4181819 in words is "four million, one hundred eighty-one thousand, eight hundred nineteen".