243393745 has 8 divisors (see below), whose sum is σ = 333797184. Its totient is φ = 166898544.

The previous prime is 243393727. The next prime is 243393757. The reversal of 243393745 is 547393342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243393745 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243393698 and 243393707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3477019 + ... + 3477088.

It is an arithmetic number, because the mean of its divisors is an integer number (41724648).

Almost surely, 2^243393745 is an apocalyptic number.

It is an amenable number.

243393745 is a deficient number, since it is larger than the sum of its proper divisors (90403439).

243393745 is an equidigital number, since it uses as much as digits as its factorization.

243393745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6954119.

The product of its digits is 272160, while the sum is 40.

The square root of 243393745 is about 15601.0815330220. The cubic root of 243393745 is about 624.3620113744.

The spelling of 243393745 in words is "two hundred forty-three million, three hundred ninety-three thousand, seven hundred forty-five".