245949911 has 2 divisors, whose sum is σ = 245949912. Its totient is φ = 245949910.

The previous prime is 245949901. The next prime is 245949941. The reversal of 245949911 is 119949542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245949911 - 2¹⁰ = 245948887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245949901) 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, 122974955 + 122974956.

It is an arithmetic number, because the mean of its divisors is an integer number (122974956).

Almost surely, 2^245949911 is an apocalyptic number.

245949911 is a deficient number, since it is larger than the sum of its proper divisors (1).

245949911 is an equidigital number, since it uses as much as digits as its factorization.

245949911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 44.

The square root of 245949911 is about 15682.7902810692. The cubic root of 245949911 is about 626.5401257562.

The spelling of 245949911 in words is "two hundred forty-five million, nine hundred forty-nine thousand, nine hundred eleven".