18385848 has 72 divisors (see below), whose sum is σ = 53955720. Its totient is φ = 5653440.

The previous prime is 18385847. The next prime is 18385849. The reversal of 18385848 is 84858381.

It is an interprime number because it is at equal distance from previous prime (18385847) and next prime (18385849).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18385841) 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 17 ways as a sum of consecutive naturals, for example, 11413 + ... + 12923.

It is an arithmetic number, because the mean of its divisors is an integer number (749385).

Almost surely, 2^18385848 is an apocalyptic number.

18385848 is a gapful number since it is divisible by the number (18) 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 18385848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26977860).

18385848 is an abundant number, since it is smaller than the sum of its proper divisors (35569872).

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

18385848 is a wasteful number, since it uses less digits than its factorization.

18385848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 1529 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 18385848 is about 4287.8721995880. The cubic root of 18385848 is about 263.9335232071.

The spelling of 18385848 in words is "eighteen million, three hundred eighty-five thousand, eight hundred forty-eight".