818204419 has 2 divisors, whose sum is σ = 818204420. Its totient is φ = 818204418.

The previous prime is 818204371. The next prime is 818204423. The reversal of 818204419 is 914402818.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 818204419 - 2⁷ = 818204291 is a prime.

It is a super-2 number, since 2×818204419² = 1338916942542255122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (818204479) 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, 409102209 + 409102210.

It is an arithmetic number, because the mean of its divisors is an integer number (409102210).

Almost surely, 2^818204419 is an apocalyptic number.

818204419 is a deficient number, since it is larger than the sum of its proper divisors (1).

818204419 is an equidigital number, since it uses as much as digits as its factorization.

818204419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 818204419 is about 28604.2727402743. The cubic root of 818204419 is about 935.3064735465.

The spelling of 818204419 in words is "eight hundred eighteen million, two hundred four thousand, four hundred nineteen".