18618252 has 48 divisors (see below), whose sum is σ = 46986240. Its totient is φ = 5717952.

The previous prime is 18618227. The next prime is 18618253. The reversal of 18618252 is 25281681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18618253) 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, 7333 + ... + 9539.

It is an arithmetic number, because the mean of its divisors is an integer number (978880).

Almost surely, 2^18618252 is an apocalyptic number.

18618252 is a gapful number since it is divisible by the number (12) 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 18618252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23493120).

18618252 is an abundant number, since it is smaller than the sum of its proper divisors (28367988).

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

18618252 is a wasteful number, since it uses less digits than its factorization.

18618252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270 (or 2268 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 18618252 is about 4314.8872522929. The cubic root of 18618252 is about 265.0409430034.

The spelling of 18618252 in words is "eighteen million, six hundred eighteen thousand, two hundred fifty-two".