18020966 has 8 divisors (see below), whose sum is σ = 27049464. Its totient is φ = 9004480.

The previous prime is 18020963. The next prime is 18020971. The reversal of 18020966 is 66902081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18020963) 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 3 ways as a sum of consecutive naturals, for example, 4406 + ... + 7446.

It is an arithmetic number, because the mean of its divisors is an integer number (3381183).

Almost surely, 2^18020966 is an apocalyptic number.

18020966 is a deficient number, since it is larger than the sum of its proper divisors (9028498).

18020966 is a wasteful number, since it uses less digits than its factorization.

18020966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 18020966 is about 4245.1108348311. The cubic root of 18020966 is about 262.1758526512.

The spelling of 18020966 in words is "eighteen million, twenty thousand, nine hundred sixty-six".