243530198 has 8 divisors (see below), whose sum is σ = 368646960. Its totient is φ = 120647880.

The previous prime is 243530191. The next prime is 243530207. The reversal of 243530198 is 891035342.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243530191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558338 + ... + 558773.

It is an arithmetic number, because the mean of its divisors is an integer number (46080870).

Almost surely, 2^243530198 is an apocalyptic number.

243530198 is a deficient number, since it is larger than the sum of its proper divisors (125116762).

243530198 is a wasteful number, since it uses less digits than its factorization.

243530198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117222.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 243530198 is about 15605.4541106627. The cubic root of 243530198 is about 624.4786675542.

The spelling of 243530198 in words is "two hundred forty-three million, five hundred thirty thousand, one hundred ninety-eight".