18006382 has 4 divisors (see below), whose sum is σ = 27009576. Its totient is φ = 9003190.

The previous prime is 18006377. The next prime is 18006389. The reversal of 18006382 is 28360081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28360081 = 23 ⋅1233047.

It is a self number, because there is not a number n which added to its sum of digits gives 18006382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18006389) 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 as a sum of consecutive naturals, namely, 4501594 + ... + 4501597.

It is an arithmetic number, because the mean of its divisors is an integer number (6752394).

Almost surely, 2^18006382 is an apocalyptic number.

18006382 is a deficient number, since it is larger than the sum of its proper divisors (9003194).

18006382 is an equidigital number, since it uses as much as digits as its factorization.

18006382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9003193.

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

The square root of 18006382 is about 4243.3927463764. The cubic root of 18006382 is about 262.1051090417.

The spelling of 18006382 in words is "eighteen million, six thousand, three hundred eighty-two".