18018006 has 32 divisors (see below), whose sum is σ = 37736448. Its totient is φ = 5728320.

The previous prime is 18017981. The next prime is 18018017. The reversal of 18018006 is 60081081.

It is a super-3 number, since 3×18018006³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12915 + ... + 14241.

It is an arithmetic number, because the mean of its divisors is an integer number (1179264).

Almost surely, 2^18018006 is an apocalyptic number.

18018006 is an abundant number, since it is smaller than the sum of its proper divisors (19718442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18018006 is a wasteful number, since it uses less digits than its factorization.

18018006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 18018006 is about 4244.7621841512. The cubic root of 18018006 is about 262.1614974641.

Adding to 18018006 its reverse (60081081), we get a palindrome (78099087).

The spelling of 18018006 in words is "eighteen million, eighteen thousand, six".