18325140 has 24 divisors (see below), whose sum is σ = 51310560. Its totient is φ = 4886688.

The previous prime is 18325127. The next prime is 18325147. The reversal of 18325140 is 4152381.

It is a self number, because there is not a number n which added to its sum of digits gives 18325140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18325147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152650 + ... + 152769.

It is an arithmetic number, because the mean of its divisors is an integer number (2137940).

Almost surely, 2^18325140 is an apocalyptic number.

18325140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18325140 is an abundant number, since it is smaller than the sum of its proper divisors (32985420).

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

18325140 is a wasteful number, since it uses less digits than its factorization.

18325140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305431 (or 305429 counting only the distinct ones).

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

The square root of 18325140 is about 4280.7873107642. The cubic root of 18325140 is about 263.6427099687.

The spelling of 18325140 in words is "eighteen million, three hundred twenty-five thousand, one hundred forty".