18966073 has 8 divisors (see below), whose sum is σ = 21713600. Its totient is φ = 16228080.

The previous prime is 18966043. The next prime is 18966113. The reversal of 18966073 is 37066981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18966073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18966043) 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 in 7 ways as a sum of consecutive naturals, for example, 2578 + ... + 6676.

It is an arithmetic number, because the mean of its divisors is an integer number (2714200).

Almost surely, 2^18966073 is an apocalyptic number.

It is an amenable number.

18966073 is a deficient number, since it is larger than the sum of its proper divisors (2747527).

18966073 is an equidigital number, since it uses as much as digits as its factorization.

18966073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4767.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 18966073 is about 4355.0055109035. The cubic root of 18966073 is about 266.6812441684.

The spelling of 18966073 in words is "eighteen million, nine hundred sixty-six thousand, seventy-three".