2169459569 has 2 divisors, whose sum is σ = 2169459570. Its totient is φ = 2169459568.

The previous prime is 2169459563. The next prime is 2169459581. The reversal of 2169459569 is 9659549612.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1367890225 + 801569344 = 36985^2 + 28312^2 .

It is a cyclic number.

It is not a de Polignac number, because 2169459569 - 2¹⁶ = 2169394033 is a prime.

It is a super-2 number, since 2×2169459569² = 9413109643051331522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2169459563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084729784 + 1084729785.

It is an arithmetic number, because the mean of its divisors is an integer number (1084729785).

Almost surely, 2^2169459569 is an apocalyptic number.

It is an amenable number.

2169459569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169459569 is an equidigital number, since it uses as much as digits as its factorization.

2169459569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5248800, while the sum is 56.

The square root of 2169459569 is about 46577.4577344019. The cubic root of 2169459569 is about 1294.5451052059.

The spelling of 2169459569 in words is "two billion, one hundred sixty-nine million, four hundred fifty-nine thousand, five hundred sixty-nine".