18449300 has 54 divisors (see below), whose sum is σ = 41493438. Its totient is φ = 7117760.

The previous prime is 18449293. The next prime is 18449311. The reversal of 18449300 is 394481.

It can be written as a sum of positive squares in 3 ways, for example, as 2353156 + 16096144 = 1534^2 + 4012^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 312671 + ... + 312729.

It is an arithmetic number, because the mean of its divisors is an integer number (768397).

Almost surely, 2^18449300 is an apocalyptic number.

18449300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18449300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20746719).

18449300 is an abundant number, since it is smaller than the sum of its proper divisors (23044138).

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

18449300 is a wasteful number, since it uses less digits than its factorization.

18449300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 18449300 is about 4295.2648346755. The cubic root of 18449300 is about 264.2367977921.

The spelling of 18449300 in words is "eighteen million, four hundred forty-nine thousand, three hundred".