243341499949 has 2 divisors, whose sum is σ = 243341499950. Its totient is φ = 243341499948.

The previous prime is 243341499931. The next prime is 243341499953. The reversal of 243341499949 is 949994143342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196698459049 + 46643040900 = 443507^2 + 215970^2 .

It is a cyclic number.

It is not a de Polignac number, because 243341499949 - 2⁹ = 243341499437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243341491949) 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, 121670749974 + 121670749975.

It is an arithmetic number, because the mean of its divisors is an integer number (121670749975).

Almost surely, 2^243341499949 is an apocalyptic number.

It is an amenable number.

243341499949 is a deficient number, since it is larger than the sum of its proper divisors (1).

243341499949 is an equidigital number, since it uses as much as digits as its factorization.

243341499949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30233088, while the sum is 61.

The spelling of 243341499949 in words is "two hundred forty-three billion, three hundred forty-one million, four hundred ninety-nine thousand, nine hundred forty-nine".