18068186 has 4 divisors (see below), whose sum is σ = 27102282. Its totient is φ = 9034092.

The previous prime is 18068159. The next prime is 18068191. The reversal of 18068186 is 68186081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11662225 + 6405961 = 3415^2 + 2531^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4517045 + ... + 4517048.

Almost surely, 2^18068186 is an apocalyptic number.

18068186 is a deficient number, since it is larger than the sum of its proper divisors (9034096).

18068186 is an equidigital number, since it uses as much as digits as its factorization.

18068186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9034095.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 18068186 is about 4250.6688885398. The cubic root of 18068186 is about 262.4046444281.

The spelling of 18068186 in words is "eighteen million, sixty-eight thousand, one hundred eighty-six".