18289314 has 80 divisors (see below), whose sum is σ = 45084600. Its totient is φ = 5515776.

The previous prime is 18289307. The next prime is 18289357. The reversal of 18289314 is 41398281.

It can be written as a sum of positive squares in 4 ways, for example, as 18275625 + 13689 = 4275^2 + 117^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 79752 + ... + 79980.

Almost surely, 2^18289314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18289314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22542300).

18289314 is an abundant number, since it is smaller than the sum of its proper divisors (26795286).

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

18289314 is a wasteful number, since it uses less digits than its factorization.

18289314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 280 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 18289314 is about 4276.6007529345. The cubic root of 18289314 is about 263.4707890330.

The spelling of 18289314 in words is "eighteen million, two hundred eighty-nine thousand, three hundred fourteen".