205116269 has 2 divisors, whose sum is σ = 205116270. Its totient is φ = 205116268.

The previous prime is 205116251. The next prime is 205116281. The reversal of 205116269 is 962611502.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185313769 + 19802500 = 13613^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 205116269 - 2¹⁶ = 205050733 is a prime.

It is a super-2 number, since 2×205116269² = 84145367616960722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205116209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102558134 + 102558135.

It is an arithmetic number, because the mean of its divisors is an integer number (102558135).

Almost surely, 2^205116269 is an apocalyptic number.

It is an amenable number.

205116269 is a deficient number, since it is larger than the sum of its proper divisors (1).

205116269 is an equidigital number, since it uses as much as digits as its factorization.

205116269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 205116269 is about 14321.8807773281. The cubic root of 205116269 is about 589.7483068921.

The spelling of 205116269 in words is "two hundred five million, one hundred sixteen thousand, two hundred sixty-nine".