206837149 has 2 divisors, whose sum is σ = 206837150. Its totient is φ = 206837148.

The previous prime is 206837119. The next prime is 206837167. The reversal of 206837149 is 941738602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120012025 + 86825124 = 10955^2 + 9318^2 .

It is a cyclic number.

It is not a de Polignac number, because 206837149 - 2⁵ = 206837117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206837119) 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, 103418574 + 103418575.

It is an arithmetic number, because the mean of its divisors is an integer number (103418575).

Almost surely, 2^206837149 is an apocalyptic number.

It is an amenable number.

206837149 is a deficient number, since it is larger than the sum of its proper divisors (1).

206837149 is an equidigital number, since it uses as much as digits as its factorization.

206837149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 206837149 is about 14381.8339929232. The cubic root of 206837149 is about 591.3930017177.

The spelling of 206837149 in words is "two hundred six million, eight hundred thirty-seven thousand, one hundred forty-nine".