18009150 has 96 divisors (see below), whose sum is σ = 48211200. Its totient is φ = 4435200.

The previous prime is 18009143. The next prime is 18009151. The reversal of 18009150 is 5190081.

It is a self number, because there is not a number n which added to its sum of digits gives 18009150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18009151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 202306 + ... + 202394.

It is an arithmetic number, because the mean of its divisors is an integer number (502200).

Almost surely, 2^18009150 is an apocalyptic number.

18009150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18009150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24105600).

18009150 is an abundant number, since it is smaller than the sum of its proper divisors (30202050).

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

18009150 is a wasteful number, since it uses less digits than its factorization.

18009150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 18009150 is about 4243.7188879566. The cubic root of 18009150 is about 262.1185389055.

The spelling of 18009150 in words is "eighteen million, nine thousand, one hundred fifty".