18049782 has 16 divisors (see below), whose sum is σ = 36310320. Its totient is φ = 5981472.

The previous prime is 18049769. The next prime is 18049783. The reversal of 18049782 is 28794081.

It is a self number, because there is not a number n which added to its sum of digits gives 18049782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18049783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7657 + ... + 9732.

It is an arithmetic number, because the mean of its divisors is an integer number (2269395).

Almost surely, 2^18049782 is an apocalyptic number.

18049782 is an abundant number, since it is smaller than the sum of its proper divisors (18260538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18049782 is a wasteful number, since it uses less digits than its factorization.

18049782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17567.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 18049782 is about 4248.5035012343. The cubic root of 18049782 is about 262.3155202683.

The spelling of 18049782 in words is "eighteen million, forty-nine thousand, seven hundred eighty-two".