18330773 has 2 divisors, whose sum is σ = 18330774. Its totient is φ = 18330772.

The previous prime is 18330751. The next prime is 18330779. The reversal of 18330773 is 37703381.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18037009 + 293764 = 4247^2 + 542^2 .

It is an emirp because it is prime and its reverse (37703381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18330773 - 2¹⁰ = 18329749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18330779) 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, 9165386 + 9165387.

It is an arithmetic number, because the mean of its divisors is an integer number (9165387).

Almost surely, 2^18330773 is an apocalyptic number.

It is an amenable number.

18330773 is a deficient number, since it is larger than the sum of its proper divisors (1).

18330773 is an equidigital number, since it uses as much as digits as its factorization.

18330773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 18330773 is about 4281.4451999296. The cubic root of 18330773 is about 263.6697210809.

The spelling of 18330773 in words is "eighteen million, three hundred thirty thousand, seven hundred seventy-three".