18065908 has 18 divisors (see below), whose sum is σ = 36777426. Its totient is φ = 7742448.

The previous prime is 18065897. The next prime is 18065909. The reversal of 18065908 is 80956081.

It can be written as a sum of positive squares in only one way, i.e., 11573604 + 6492304 = 3402^2 + 2548^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18065909) 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 5 ways as a sum of consecutive naturals, for example, 45891 + ... + 46282.

Almost surely, 2^18065908 is an apocalyptic number.

It is an amenable number.

18065908 is an abundant number, since it is smaller than the sum of its proper divisors (18711518).

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

18065908 is a wasteful number, since it uses less digits than its factorization.

18065908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92191 (or 92182 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 18065908 is about 4250.4009222660. The cubic root of 18065908 is about 262.3936161507.

The spelling of 18065908 in words is "eighteen million, sixty-five thousand, nine hundred eight".