18385363 has 2 divisors, whose sum is σ = 18385364. Its totient is φ = 18385362.

The previous prime is 18385361. The next prime is 18385399. The reversal of 18385363 is 36358381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18385363 - 2¹ = 18385361 is a prime.

Together with 18385361, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18385361) 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, 9192681 + 9192682.

It is an arithmetic number, because the mean of its divisors is an integer number (9192682).

Almost surely, 2^18385363 is an apocalyptic number.

18385363 is a deficient number, since it is larger than the sum of its proper divisors (1).

18385363 is an equidigital number, since it uses as much as digits as its factorization.

18385363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 18385363 is about 4287.8156443579. The cubic root of 18385363 is about 263.9312024205.

The spelling of 18385363 in words is "eighteen million, three hundred eighty-five thousand, three hundred sixty-three".