243081180 has 144 divisors (see below), whose sum is σ = 767370240. Its totient is φ = 62239104.

The previous prime is 243081149. The next prime is 243081191. The reversal of 243081180 is 81180342.

243081180 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 498897 + ... + 499383.

It is an arithmetic number, because the mean of its divisors is an integer number (5328960).

Almost surely, 2^243081180 is an apocalyptic number.

243081180 is a gapful number since it is divisible by the number (20) 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 243081180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383685120).

243081180 is an abundant number, since it is smaller than the sum of its proper divisors (524289060).

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

243081180 is a wasteful number, since it uses less digits than its factorization.

243081180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 243081180 is about 15591.0609004006. The cubic root of 243081180 is about 624.0946293864.

The spelling of 243081180 in words is "two hundred forty-three million, eighty-one thousand, one hundred eighty".