18304428303 has 32 divisors (see below), whose sum is σ = 31072665600. Its totient is φ = 10432322208.

The previous prime is 18304428301. The next prime is 18304428313. The reversal of 18304428303 is 30382440381.

It is a happy number.

18304428303 is a `hidden beast` number, since 1 + 8 + 304 + 42 + 8 + 303 = 666.

It is not a de Polignac number, because 18304428303 - 2¹ = 18304428301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18304428301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54048 + ... + 198821.

It is an arithmetic number, because the mean of its divisors is an integer number (971020800).

Almost surely, 2^18304428303 is an apocalyptic number.

18304428303 is a deficient number, since it is larger than the sum of its proper divisors (12768237297).

18304428303 is a wasteful number, since it uses less digits than its factorization.

18304428303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253268 (or 253262 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

Adding to 18304428303 its reverse (30382440381), we get a palindrome (48686868684).

The spelling of 18304428303 in words is "eighteen billion, three hundred four million, four hundred twenty-eight thousand, three hundred three".