18180150 has 48 divisors (see below), whose sum is σ = 47467200. Its totient is φ = 4592160.

The previous prime is 18180077. The next prime is 18180161. The reversal of 18180150 is 5108181.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18180150.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 340 + ... + 6039.

It is an arithmetic number, because the mean of its divisors is an integer number (988900).

Almost surely, 2^18180150 is an apocalyptic number.

18180150 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 18180150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23733600).

18180150 is an abundant number, since it is smaller than the sum of its proper divisors (29287050).

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

18180150 is a wasteful number, since it uses less digits than its factorization.

18180150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6413 (or 6408 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 18180150 is about 4263.8187109679. The cubic root of 18180150 is about 262.9455471897.

The spelling of 18180150 in words is "eighteen million, one hundred eighty thousand, one hundred fifty".