243045202949 has 2 divisors, whose sum is σ = 243045202950. Its totient is φ = 243045202948.

The previous prime is 243045202913. The next prime is 243045202969. The reversal of 243045202949 is 949202540342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143137372225 + 99907830724 = 378335^2 + 316082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243045202949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243045202909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121522601474 + 121522601475.

It is an arithmetic number, because the mean of its divisors is an integer number (121522601475).

Almost surely, 2^243045202949 is an apocalyptic number.

It is an amenable number.

243045202949 is a deficient number, since it is larger than the sum of its proper divisors (1).

243045202949 is an equidigital number, since it uses as much as digits as its factorization.

243045202949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 243045202949 in words is "two hundred forty-three billion, forty-five million, two hundred two thousand, nine hundred forty-nine".