423193819 has 2 divisors, whose sum is σ = 423193820. Its totient is φ = 423193818.

The previous prime is 423193807. The next prime is 423193829. The reversal of 423193819 is 918391324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423193819 - 2¹³ = 423185627 is a prime.

It is a super-2 number, since 2×423193819² = 358186016879609522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (423193829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211596909 + 211596910.

It is an arithmetic number, because the mean of its divisors is an integer number (211596910).

Almost surely, 2^423193819 is an apocalyptic number.

423193819 is a deficient number, since it is larger than the sum of its proper divisors (1).

423193819 is an equidigital number, since it uses as much as digits as its factorization.

423193819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 423193819 is about 20571.6751627086. The cubic root of 423193819 is about 750.7807094121.

The spelling of 423193819 in words is "four hundred twenty-three million, one hundred ninety-three thousand, eight hundred nineteen".