18318850 has 48 divisors (see below), whose sum is σ = 39149280. Its totient is φ = 6307200.

The previous prime is 18318827. The next prime is 18318857. The reversal of 18318850 is 5881381.

It is a super-3 number, since 3×18318850³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18318857) 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, 9574 + ... + 11326.

It is an arithmetic number, because the mean of its divisors is an integer number (815610).

Almost surely, 2^18318850 is an apocalyptic number.

18318850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18318850 is an abundant number, since it is smaller than the sum of its proper divisors (20830430).

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

18318850 is a wasteful number, since it uses less digits than its factorization.

18318850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 18318850 is about 4280.0525697706. The cubic root of 18318850 is about 263.6125418969.

The spelling of 18318850 in words is "eighteen million, three hundred eighteen thousand, eight hundred fifty".