18222375 has 16 divisors (see below), whose sum is σ = 30322656. Its totient is φ = 9718400.

The previous prime is 18222367. The next prime is 18222427. The reversal of 18222375 is 57322281.

It is not a de Polignac number, because 18222375 - 2³ = 18222367 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23922 + ... + 24671.

It is an arithmetic number, because the mean of its divisors is an integer number (1895166).

Almost surely, 2^18222375 is an apocalyptic number.

18222375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18222375 is a deficient number, since it is larger than the sum of its proper divisors (12100281).

18222375 is an equidigital number, since it uses as much as digits as its factorization.

18222375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48611 (or 48601 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 18222375 is about 4268.7673864946. The cubic root of 18222375 is about 263.1489611880.

The spelling of 18222375 in words is "eighteen million, two hundred twenty-two thousand, three hundred seventy-five".