243958881 has 8 divisors (see below), whose sum is σ = 325658880. Its totient is φ = 162449072.

The previous prime is 243958843. The next prime is 243958901. The reversal of 243958881 is 188859342.

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 243958881 - 2¹¹ = 243956833 is a prime.

It is a super-2 number, since 2×243958881² = 119031871237544322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243958881.

It is not an unprimeable number, because it can be changed into a prime (243958801) 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 7 ways as a sum of consecutive naturals, for example, 44526 + ... + 49703.

It is an arithmetic number, because the mean of its divisors is an integer number (40707360).

Almost surely, 2^243958881 is an apocalyptic number.

It is an amenable number.

243958881 is a deficient number, since it is larger than the sum of its proper divisors (81699999).

243958881 is an equidigital number, since it uses as much as digits as its factorization.

243958881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95095.

The product of its digits is 552960, while the sum is 48.

The square root of 243958881 is about 15619.1831092410. The cubic root of 243958881 is about 624.8448732870.

The spelling of 243958881 in words is "two hundred forty-three million, nine hundred fifty-eight thousand, eight hundred eighty-one".