18000894 has 16 divisors (see below), whose sum is σ = 37163520. Its totient is φ = 5806680.

The previous prime is 18000893. The next prime is 18000901. The reversal of 18000894 is 49800081.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48204 + ... + 48575.

It is an arithmetic number, because the mean of its divisors is an integer number (2322720).

Almost surely, 2^18000894 is an apocalyptic number.

18000894 is an abundant number, since it is smaller than the sum of its proper divisors (19162626).

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

18000894 is a wasteful number, since it uses less digits than its factorization.

18000894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96815.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 18000894 is about 4242.7460447215. The cubic root of 18000894 is about 262.0784781320.

The spelling of 18000894 in words is "eighteen million, eight hundred ninety-four", and thus it is an aban number.