241858009 has 2 divisors, whose sum is σ = 241858010. Its totient is φ = 241858008.

The previous prime is 241857991. The next prime is 241858013. The reversal of 241858009 is 900858142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187142400 + 54715609 = 13680^2 + 7397^2 .

It is a cyclic number.

It is not a de Polignac number, because 241858009 - 2⁷ = 241857881 is a prime.

It is not a weakly prime, because it can be changed into another prime (241858039) 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, 120929004 + 120929005.

It is an arithmetic number, because the mean of its divisors is an integer number (120929005).

Almost surely, 2^241858009 is an apocalyptic number.

It is an amenable number.

241858009 is a deficient number, since it is larger than the sum of its proper divisors (1).

241858009 is an equidigital number, since it uses as much as digits as its factorization.

241858009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 241858009 is about 15551.7847528829. The cubic root of 241858009 is about 623.0460654695.

The spelling of 241858009 in words is "two hundred forty-one million, eight hundred fifty-eight thousand, nine".