18125430 has 32 divisors (see below), whose sum is σ = 45792000. Its totient is φ = 4578912.

The previous prime is 18125413. The next prime is 18125431. The reversal of 18125430 is 3452181.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18125430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18125431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15330 + ... + 16469.

It is an arithmetic number, because the mean of its divisors is an integer number (1431000).

Almost surely, 2^18125430 is an apocalyptic number.

18125430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18125430 is an abundant number, since it is smaller than the sum of its proper divisors (27666570).

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

18125430 is a wasteful number, since it uses less digits than its factorization.

18125430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31828.

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

The square root of 18125430 is about 4257.3970921210. The cubic root of 18125430 is about 262.6814708889.

The spelling of 18125430 in words is "eighteen million, one hundred twenty-five thousand, four hundred thirty".