243858081 has 8 divisors (see below), whose sum is σ = 344270304. Its totient is φ = 153008960.

The previous prime is 243858079. The next prime is 243858089. The reversal of 243858081 is 180858342.

243858081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243858081 - 2¹ = 243858079 is a prime.

It is a super-2 number, since 2×243858081² = 118933527338005122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243858089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2390715 + ... + 2390816.

It is an arithmetic number, because the mean of its divisors is an integer number (43033788).

Almost surely, 2^243858081 is an apocalyptic number.

It is an amenable number.

243858081 is a deficient number, since it is larger than the sum of its proper divisors (100412223).

243858081 is a wasteful number, since it uses less digits than its factorization.

243858081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781551.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 243858081 is about 15615.9559745793. The cubic root of 243858081 is about 624.7588027168.

The spelling of 243858081 in words is "two hundred forty-three million, eight hundred fifty-eight thousand, eighty-one".