18075393 has 40 divisors (see below), whose sum is σ = 31363200. Its totient is φ = 10160640.

The previous prime is 18075391. The next prime is 18075397. The reversal of 18075393 is 39357081.

18075393 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 18075393 - 2¹ = 18075391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18075391) 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 in 39 ways as a sum of consecutive naturals, for example, 40033 + ... + 40481.

It is an arithmetic number, because the mean of its divisors is an integer number (784080).

Almost surely, 2^18075393 is an apocalyptic number.

It is an amenable number.

18075393 is a deficient number, since it is larger than the sum of its proper divisors (13287807).

18075393 is an equidigital number, since it uses as much as digits as its factorization.

18075393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 18075393 is about 4251.5165529491. The cubic root of 18075393 is about 262.4395289277.

The spelling of 18075393 in words is "eighteen million, seventy-five thousand, three hundred ninety-three".