18303053 has 2 divisors, whose sum is σ = 18303054. Its totient is φ = 18303052.

The previous prime is 18303041. The next prime is 18303091. The reversal of 18303053 is 35030381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11682724 + 6620329 = 3418^2 + 2573^2 .

It is an emirp because it is prime and its reverse (35030381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18303053 - 2⁴ = 18303037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18303253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9151526 + 9151527.

It is an arithmetic number, because the mean of its divisors is an integer number (9151527).

Almost surely, 2^18303053 is an apocalyptic number.

It is an amenable number.

18303053 is a deficient number, since it is larger than the sum of its proper divisors (1).

18303053 is an equidigital number, since it uses as much as digits as its factorization.

18303053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 18303053 is about 4278.2067504972. The cubic root of 18303053 is about 263.5367459289.

The spelling of 18303053 in words is "eighteen million, three hundred three thousand, fifty-three".