19204219 has 2 divisors, whose sum is σ = 19204220. Its totient is φ = 19204218.

The previous prime is 19204217. The next prime is 19204223. The reversal of 19204219 is 91240291.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19204219 - 2¹ = 19204217 is a prime.

It is a super-2 number, since 2×19204219² = 737604054799922, which contains 22 as substring.

Together with 19204217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (19204217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9602109 + 9602110.

It is an arithmetic number, because the mean of its divisors is an integer number (9602110).

Almost surely, 2^19204219 is an apocalyptic number.

19204219 is a deficient number, since it is larger than the sum of its proper divisors (1).

19204219 is an equidigital number, since it uses as much as digits as its factorization.

19204219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 19204219 is about 4382.2618589035. The cubic root of 19204219 is about 267.7927920521.

The spelling of 19204219 in words is "nineteen million, two hundred four thousand, two hundred nineteen".