206241913 has 2 divisors, whose sum is σ = 206241914. Its totient is φ = 206241912.

The previous prime is 206241901. The next prime is 206241929. The reversal of 206241913 is 319142602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200845584 + 5396329 = 14172^2 + 2323^2 .

It is a cyclic number.

It is not a de Polignac number, because 206241913 - 2⁹ = 206241401 is a prime.

It is not a weakly prime, because it can be changed into another prime (206241983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103120956 + 103120957.

It is an arithmetic number, because the mean of its divisors is an integer number (103120957).

Almost surely, 2^206241913 is an apocalyptic number.

It is an amenable number.

206241913 is a deficient number, since it is larger than the sum of its proper divisors (1).

206241913 is an equidigital number, since it uses as much as digits as its factorization.

206241913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 206241913 is about 14361.1250603844. The cubic root of 206241913 is about 590.8251530068.

The spelling of 206241913 in words is "two hundred six million, two hundred forty-one thousand, nine hundred thirteen".