18022323 has 16 divisors (see below), whose sum is σ = 26409600. Its totient is φ = 10841280.

The previous prime is 18022297. The next prime is 18022327. The reversal of 18022323 is 32322081.

It is not a de Polignac number, because 18022323 - 2⁶ = 18022259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18022323.

It is not an unprimeable number, because it can be changed into a prime (18022327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2623 + ... + 6551.

It is an arithmetic number, because the mean of its divisors is an integer number (1650600).

Almost surely, 2^18022323 is an apocalyptic number.

18022323 is a deficient number, since it is larger than the sum of its proper divisors (8387277).

18022323 is a wasteful number, since it uses less digits than its factorization.

18022323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 18022323 is about 4245.2706627493. The cubic root of 18022323 is about 262.1824332031.

The spelling of 18022323 in words is "eighteen million, twenty-two thousand, three hundred twenty-three".