18166006 has 8 divisors (see below), whose sum is σ = 28188720. Its totient is φ = 8769768.

The previous prime is 18166003. The next prime is 18166019. The reversal of 18166006 is 60066181.

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 (18166003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156546 + ... + 156661.

It is an arithmetic number, because the mean of its divisors is an integer number (3523590).

Almost surely, 2^18166006 is an apocalyptic number.

18166006 is a deficient number, since it is larger than the sum of its proper divisors (10022714).

18166006 is a wasteful number, since it uses less digits than its factorization.

18166006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313238.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18166006 is about 4262.1597811438. The cubic root of 18166006 is about 262.8773397086.

The spelling of 18166006 in words is "eighteen million, one hundred sixty-six thousand, six".