243082639 has 2 divisors, whose sum is σ = 243082640. Its totient is φ = 243082638.

The previous prime is 243082613. The next prime is 243082649. The reversal of 243082639 is 936280342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243082639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243082598 and 243082607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243082649) 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 as a sum of consecutive naturals, namely, 121541319 + 121541320.

It is an arithmetic number, because the mean of its divisors is an integer number (121541320).

Almost surely, 2^243082639 is an apocalyptic number.

243082639 is a deficient number, since it is larger than the sum of its proper divisors (1).

243082639 is an equidigital number, since it uses as much as digits as its factorization.

243082639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 243082639 is about 15591.1076899622. The cubic root of 243082639 is about 624.0958780122.

The spelling of 243082639 in words is "two hundred forty-three million, eighty-two thousand, six hundred thirty-nine".