18045782 has 16 divisors (see below), whose sum is σ = 29414400. Its totient is φ = 8271720.

The previous prime is 18045773. The next prime is 18045787. The reversal of 18045782 is 28754081.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18045787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6482 + ... + 8837.

It is an arithmetic number, because the mean of its divisors is an integer number (1838400).

Almost surely, 2^18045782 is an apocalyptic number.

18045782 is a deficient number, since it is larger than the sum of its proper divisors (11368618).

18045782 is a wasteful number, since it uses less digits than its factorization.

18045782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15371.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 18045782 is about 4248.0327211546. The cubic root of 18045782 is about 262.2961416483.

The spelling of 18045782 in words is "eighteen million, forty-five thousand, seven hundred eighty-two".