18452443 has 2 divisors, whose sum is σ = 18452444. Its totient is φ = 18452442.

The previous prime is 18452437. The next prime is 18452453. The reversal of 18452443 is 34425481.

It is a weak prime.

It is an emirp because it is prime and its reverse (34425481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18452443 - 2⁵ = 18452411 is a prime.

It is not a weakly prime, because it can be changed into another prime (18452453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9226221 + 9226222.

It is an arithmetic number, because the mean of its divisors is an integer number (9226222).

Almost surely, 2^18452443 is an apocalyptic number.

18452443 is a deficient number, since it is larger than the sum of its proper divisors (1).

18452443 is an equidigital number, since it uses as much as digits as its factorization.

18452443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 31.

The square root of 18452443 is about 4295.6306871052. The cubic root of 18452443 is about 264.2518019584.

The spelling of 18452443 in words is "eighteen million, four hundred fifty-two thousand, four hundred forty-three".