205032769 has 2 divisors, whose sum is σ = 205032770. Its totient is φ = 205032768.

The previous prime is 205032761. The next prime is 205032803. The reversal of 205032769 is 967230502.

It is a happy number.

It is an a-pointer prime, because the next prime (205032803) can be obtained adding 205032769 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124032769 + 81000000 = 11137^2 + 9000^2 .

It is a cyclic number.

It is not a de Polignac number, because 205032769 - 2³ = 205032761 is a prime.

It is a super-2 number, since 2×205032769² = 84076872727614722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205032761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102516384 + 102516385.

It is an arithmetic number, because the mean of its divisors is an integer number (102516385).

Almost surely, 2^205032769 is an apocalyptic number.

It is an amenable number.

205032769 is a deficient number, since it is larger than the sum of its proper divisors (1).

205032769 is an equidigital number, since it uses as much as digits as its factorization.

205032769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 205032769 is about 14318.9653606676. The cubic root of 205032769 is about 589.6682699005.

The spelling of 205032769 in words is "two hundred five million, thirty-two thousand, seven hundred sixty-nine".