18135166 has 8 divisors (see below), whose sum is σ = 31088880. Its totient is φ = 7772208.

The previous prime is 18135163. The next prime is 18135167. The reversal of 18135166 is 66153181.

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 (18135163) 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, 647671 + ... + 647698.

It is an arithmetic number, because the mean of its divisors is an integer number (3886110).

Almost surely, 2^18135166 is an apocalyptic number.

18135166 is a deficient number, since it is larger than the sum of its proper divisors (12953714).

18135166 is a wasteful number, since it uses less digits than its factorization.

18135166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295378.

The product of its digits is 4320, while the sum is 31.

The square root of 18135166 is about 4258.5403602643. The cubic root of 18135166 is about 262.7284952267.

The spelling of 18135166 in words is "eighteen million, one hundred thirty-five thousand, one hundred sixty-six".