18855150 has 48 divisors (see below), whose sum is σ = 47025264. Its totient is φ = 4999680.

The previous prime is 18855149. The next prime is 18855157. The reversal of 18855150 is 5155881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18855157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50364 + ... + 50736.

It is an arithmetic number, because the mean of its divisors is an integer number (979693).

Almost surely, 2^18855150 is an apocalyptic number.

18855150 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 18855150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23512632).

18855150 is an abundant number, since it is smaller than the sum of its proper divisors (28170114).

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

18855150 is a wasteful number, since it uses less digits than its factorization.

18855150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 18855150 is about 4342.2517200181. The cubic root of 18855150 is about 266.1603326081.

The spelling of 18855150 in words is "eighteen million, eight hundred fifty-five thousand, one hundred fifty".