18213382 has 16 divisors (see below), whose sum is σ = 29871504. Its totient is φ = 8260000.

The previous prime is 18213379. The next prime is 18213383. The reversal of 18213382 is 28331281.

It is a self number, because there is not a number n which added to its sum of digits gives 18213382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18213383) 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 7 ways as a sum of consecutive naturals, for example, 14832 + ... + 16012.

It is an arithmetic number, because the mean of its divisors is an integer number (1866969).

Almost surely, 2^18213382 is an apocalyptic number.

18213382 is a deficient number, since it is larger than the sum of its proper divisors (11658122).

18213382 is a wasteful number, since it uses less digits than its factorization.

18213382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895.

The product of its digits is 2304, while the sum is 28.

The square root of 18213382 is about 4267.7139079371. The cubic root of 18213382 is about 263.1056648190.

The spelling of 18213382 in words is "eighteen million, two hundred thirteen thousand, three hundred eighty-two".