206937161 has 2 divisors, whose sum is σ = 206937162. Its totient is φ = 206937160.

The previous prime is 206937149. The next prime is 206937167. The reversal of 206937161 is 161739602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197233936 + 9703225 = 14044^2 + 3115^2 .

It is a cyclic number.

It is not a de Polignac number, because 206937161 - 2¹⁸ = 206675017 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (206937167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103468580 + 103468581.

It is an arithmetic number, because the mean of its divisors is an integer number (103468581).

Almost surely, 2^206937161 is an apocalyptic number.

It is an amenable number.

206937161 is a deficient number, since it is larger than the sum of its proper divisors (1).

206937161 is an equidigital number, since it uses as much as digits as its factorization.

206937161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 206937161 is about 14385.3105979676. The cubic root of 206937161 is about 591.4883051431.

The spelling of 206937161 in words is "two hundred six million, nine hundred thirty-seven thousand, one hundred sixty-one".