1818163 has 2 divisors, whose sum is σ = 1818164. Its totient is φ = 1818162.

The previous prime is 1818161. The next prime is 1818199. The reversal of 1818163 is 3618181.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1818163 - 2¹ = 1818161 is a prime.

Together with 1818161, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

1818163 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1818161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909081 + 909082.

It is an arithmetic number, because the mean of its divisors is an integer number (909082).

2^1818163 is an apocalyptic number.

1818163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818163 is an equidigital number, since it uses as much as digits as its factorization.

1818163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 28.

The square root of 1818163 is about 1348.3927469399. The cubic root of 1818163 is about 122.0518233653.

It can be divided in two parts, 18 and 18163, that added together give a palindrome (18181).

The spelling of 1818163 in words is "one million, eight hundred eighteen thousand, one hundred sixty-three".