18022375 has 32 divisors (see below), whose sum is σ = 26357760. Its totient is φ = 12045600.

The previous prime is 18022343. The next prime is 18022379. The reversal of 18022375 is 57322081.

It is not a de Polignac number, because 18022375 - 2⁵ = 18022343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18022379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37386 + ... + 37864.

It is an arithmetic number, because the mean of its divisors is an integer number (823680).

Almost surely, 2^18022375 is an apocalyptic number.

18022375 is a deficient number, since it is larger than the sum of its proper divisors (8335385).

18022375 is an equidigital number, since it uses as much as digits as its factorization.

18022375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 18022375 is about 4245.2767872072. The cubic root of 18022375 is about 262.1826853621.

The spelling of 18022375 in words is "eighteen million, twenty-two thousand, three hundred seventy-five".