999818353 has 2 divisors, whose sum is σ = 999818354. Its totient is φ = 999818352.

The previous prime is 999818321. The next prime is 999818389. The reversal of 999818353 is 353818999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 953142129 + 46676224 = 30873^2 + 6832^2 .

999818353 is a truncatable prime.

It is an emirp because it is prime and its reverse (353818999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999818353 - 2⁵ = 999818321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999818294 and 999818303.

It is not a weakly prime, because it can be changed into another prime (999818453) 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, 499909176 + 499909177.

It is an arithmetic number, because the mean of its divisors is an integer number (499909177).

Almost surely, 2^999818353 is an apocalyptic number.

It is an amenable number.

999818353 is a deficient number, since it is larger than the sum of its proper divisors (1).

999818353 is an equidigital number, since it uses as much as digits as its factorization.

999818353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 55.

The square root of 999818353 is about 31619.9043799946. The cubic root of 999818353 is about 999.9394473334.

The spelling of 999818353 in words is "nine hundred ninety-nine million, eight hundred eighteen thousand, three hundred fifty-three".