18052219 has 2 divisors, whose sum is σ = 18052220. Its totient is φ = 18052218.

The previous prime is 18052213. The next prime is 18052267. The reversal of 18052219 is 91225081.

It is a weak prime.

It is an emirp because it is prime and its reverse (91225081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18052219 - 2⁵ = 18052187 is a prime.

It is a super-2 number, since 2×18052219² = 651765221647922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18052213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9026109 + 9026110.

It is an arithmetic number, because the mean of its divisors is an integer number (9026110).

Almost surely, 2^18052219 is an apocalyptic number.

18052219 is a deficient number, since it is larger than the sum of its proper divisors (1).

18052219 is an equidigital number, since it uses as much as digits as its factorization.

18052219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 18052219 is about 4248.7902984261. The cubic root of 18052219 is about 262.3273252891.

The spelling of 18052219 in words is "eighteen million, fifty-two thousand, two hundred nineteen".