18066117 has 16 divisors (see below), whose sum is σ = 24837120. Its totient is φ = 11673600.

The previous prime is 18066091. The next prime is 18066119. The reversal of 18066117 is 71166081.

It is a happy number.

It is not a de Polignac number, because 18066117 - 2²³ = 9677509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18066119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23109 + ... + 23877.

It is an arithmetic number, because the mean of its divisors is an integer number (1552320).

Almost surely, 2^18066117 is an apocalyptic number.

It is an amenable number.

18066117 is a deficient number, since it is larger than the sum of its proper divisors (6771003).

18066117 is a wasteful number, since it uses less digits than its factorization.

18066117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 18066117 is about 4250.4255081109. The cubic root of 18066117 is about 262.3946280023.

The spelling of 18066117 in words is "eighteen million, sixty-six thousand, one hundred seventeen".