18018366 has 8 divisors (see below), whose sum is σ = 36036744. Its totient is φ = 6006120.

The previous prime is 18018353. The next prime is 18018373. The reversal of 18018366 is 66381081.

It is a sphenic number, since it is the product of 3 distinct primes.

18018366 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501525 + ... + 1501536.

It is an arithmetic number, because the mean of its divisors is an integer number (4504593).

Almost surely, 2^18018366 is an apocalyptic number.

18018366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18018366 is a wasteful number, since it uses less digits than its factorization.

18018366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003066.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18018366 is about 4244.8045891419. The cubic root of 18018366 is about 262.1632434492.

The spelling of 18018366 in words is "eighteen million, eighteen thousand, three hundred sixty-six".