18318150 has 60 divisors (see below), whose sum is σ = 50908572. Its totient is φ = 4883760.

The previous prime is 18318137. The next prime is 18318151. The reversal of 18318150 is 5181381.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18318151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1789 + ... + 6311.

Almost surely, 2^18318150 is an apocalyptic number.

18318150 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 18318150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25454286).

18318150 is an abundant number, since it is smaller than the sum of its proper divisors (32590422).

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

18318150 is a wasteful number, since it uses less digits than its factorization.

18318150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547 (or 4533 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 18318150 is about 4279.9707942929. The cubic root of 18318150 is about 263.6091841328.

The spelling of 18318150 in words is "eighteen million, three hundred eighteen thousand, one hundred fifty".