18852390 has 24 divisors (see below), whose sum is σ = 49016448. Its totient is φ = 5027280.

The previous prime is 18852377. The next prime is 18852391. The reversal of 18852390 is 9325881.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18852391) 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 11 ways as a sum of consecutive naturals, for example, 104646 + ... + 104825.

It is an arithmetic number, because the mean of its divisors is an integer number (2042352).

Almost surely, 2^18852390 is an apocalyptic number.

18852390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18852390 is an abundant number, since it is smaller than the sum of its proper divisors (30164058).

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

18852390 is a wasteful number, since it uses less digits than its factorization.

18852390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209484 (or 209481 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 18852390 is about 4341.9339009248. The cubic root of 18852390 is about 266.1473452039.

The spelling of 18852390 in words is "eighteen million, eight hundred fifty-two thousand, three hundred ninety".