18241530 has 32 divisors (see below), whose sum is σ = 45684864. Its totient is φ = 4652736.

The previous prime is 18241519. The next prime is 18241537. The reversal of 18241530 is 3514281.

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 18241530.

It is not an unprimeable number, because it can be changed into a prime (18241537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12529 + ... + 13908.

It is an arithmetic number, because the mean of its divisors is an integer number (1427652).

Almost surely, 2^18241530 is an apocalyptic number.

18241530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18241530 is an abundant number, since it is smaller than the sum of its proper divisors (27443334).

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

18241530 is a wasteful number, since it uses less digits than its factorization.

18241530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26470.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18241530 is about 4271.0104190929. The cubic root of 18241530 is about 263.2411345588.

The spelling of 18241530 in words is "eighteen million, two hundred forty-one thousand, five hundred thirty".