18068266 has 4 divisors (see below), whose sum is σ = 27102402. Its totient is φ = 9034132.

The previous prime is 18068251. The next prime is 18068279. The reversal of 18068266 is 66286081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66286081 = 223 ⋅297247.

It can be written as a sum of positive squares in only one way, i.e., 11458225 + 6610041 = 3385^2 + 2571^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4517065 + ... + 4517068.

Almost surely, 2^18068266 is an apocalyptic number.

18068266 is a deficient number, since it is larger than the sum of its proper divisors (9034136).

18068266 is an equidigital number, since it uses as much as digits as its factorization.

18068266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9034135.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 18068266 is about 4250.6782988130. The cubic root of 18068266 is about 262.4050317081.

The spelling of 18068266 in words is "eighteen million, sixty-eight thousand, two hundred sixty-six".