2218903 has 2 divisors, whose sum is σ = 2218904. Its totient is φ = 2218902.

The previous prime is 2218901. The next prime is 2218907. The reversal of 2218903 is 3098122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2218903 - 2¹ = 2218901 is a prime.

Together with 2218901, it forms a pair of twin primes.

2218903 is a lucky number.

It is equal to p₁₆₃₉₅₁ and since 2218903 and 163951 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2218901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109451 + 1109452.

It is an arithmetic number, because the mean of its divisors is an integer number (1109452).

2^2218903 is an apocalyptic number.

2218903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218903 is an equidigital number, since it uses as much as digits as its factorization.

2218903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2218903 is about 1489.5982679904. The cubic root of 2218903 is about 130.4305840855.

The spelling of 2218903 in words is "two million, two hundred eighteen thousand, nine hundred three".