18325263 has 16 divisors (see below), whose sum is σ = 27023616. Its totient is φ = 10952640.

The previous prime is 18325261. The next prime is 18325271. The reversal of 18325263 is 36252381.

It is not a de Polignac number, because 18325263 - 2¹ = 18325261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18325263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18325261) 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, 1395 + ... + 6212.

It is an arithmetic number, because the mean of its divisors is an integer number (1688976).

Almost surely, 2^18325263 is an apocalyptic number.

18325263 is a deficient number, since it is larger than the sum of its proper divisors (8698353).

18325263 is a wasteful number, since it uses less digits than its factorization.

18325263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7694.

The product of its digits is 8640, while the sum is 30.

The square root of 18325263 is about 4280.8016772563. The cubic root of 18325263 is about 263.6432998319.

It can be divided in two parts, 183252 and 63, that added together give a triangular number (183315 = T₆₀₅).

The spelling of 18325263 in words is "eighteen million, three hundred twenty-five thousand, two hundred sixty-three".