18803219 has 2 divisors, whose sum is σ = 18803220. Its totient is φ = 18803218.

The previous prime is 18803201. The next prime is 18803227. The reversal of 18803219 is 91230881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18803219 - 2⁸ = 18802963 is a prime.

It is a super-2 number, since 2×18803219² = 707122089523922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18803269) 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, 9401609 + 9401610.

It is an arithmetic number, because the mean of its divisors is an integer number (9401610).

Almost surely, 2^18803219 is an apocalyptic number.

18803219 is a deficient number, since it is larger than the sum of its proper divisors (1).

18803219 is an equidigital number, since it uses as much as digits as its factorization.

18803219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 18803219 is about 4336.2678653423. The cubic root of 18803219 is about 265.9157543149.

The spelling of 18803219 in words is "eighteen million, eight hundred three thousand, two hundred nineteen".