243982365 has 32 divisors (see below), whose sum is σ = 440553600. Its totient is φ = 114213120.

The previous prime is 243982357. The next prime is 243982379. The reversal of 243982365 is 563289342.

It is not a de Polignac number, because 243982365 - 2³ = 243982357 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 20710 + ... + 30279.

It is an arithmetic number, because the mean of its divisors is an integer number (13767300).

Almost surely, 2^243982365 is an apocalyptic number.

It is an amenable number.

243982365 is a deficient number, since it is larger than the sum of its proper divisors (196571235).

243982365 is a wasteful number, since it uses less digits than its factorization.

243982365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51037.

The product of its digits is 311040, while the sum is 42.

The square root of 243982365 is about 15619.9348590191. The cubic root of 243982365 is about 624.8649222752.

The spelling of 243982365 in words is "two hundred forty-three million, nine hundred eighty-two thousand, three hundred sixty-five".