206115841 has 2 divisors, whose sum is σ = 206115842. Its totient is φ = 206115840.

The previous prime is 206115829. The next prime is 206115893. The reversal of 206115841 is 148511602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117831025 + 88284816 = 10855^2 + 9396^2 .

It is a cyclic number.

It is not a de Polignac number, because 206115841 - 2¹¹ = 206113793 is a prime.

It is a super-2 number, since 2×206115841² = 84967479822274562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206113841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103057920 + 103057921.

It is an arithmetic number, because the mean of its divisors is an integer number (103057921).

Almost surely, 2^206115841 is an apocalyptic number.

It is an amenable number.

206115841 is a deficient number, since it is larger than the sum of its proper divisors (1).

206115841 is an equidigital number, since it uses as much as digits as its factorization.

206115841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 206115841 is about 14356.7350396948. The cubic root of 206115841 is about 590.7047415118.

The spelling of 206115841 in words is "two hundred six million, one hundred fifteen thousand, eight hundred forty-one".