243448193 has 4 divisors (see below), whose sum is σ = 244520880. Its totient is φ = 242375508.

The previous prime is 243448181. The next prime is 243448223. The reversal of 243448193 is 391844342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243448193 - 2⁸ = 243447937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243448103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536003 + ... + 536456.

It is an arithmetic number, because the mean of its divisors is an integer number (61130220).

Almost surely, 2^243448193 is an apocalyptic number.

It is an amenable number.

243448193 is a deficient number, since it is larger than the sum of its proper divisors (1072687).

243448193 is a wasteful number, since it uses less digits than its factorization.

243448193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072686.

The product of its digits is 82944, while the sum is 38.

The square root of 243448193 is about 15602.8264426674. The cubic root of 243448193 is about 624.4085651977.

The spelling of 243448193 in words is "two hundred forty-three million, four hundred forty-eight thousand, one hundred ninety-three".