2068864409 has 2 divisors, whose sum is σ = 2068864410. Its totient is φ = 2068864408.

The previous prime is 2068864397. The next prime is 2068864459. The reversal of 2068864409 is 9044688602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1842813184 + 226051225 = 42928^2 + 15035^2 .

It is a cyclic number.

It is not a de Polignac number, because 2068864409 - 2⁴ = 2068864393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2068864459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034432204 + 1034432205.

It is an arithmetic number, because the mean of its divisors is an integer number (1034432205).

Almost surely, 2^2068864409 is an apocalyptic number.

It is an amenable number.

2068864409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2068864409 is an equidigital number, since it uses as much as digits as its factorization.

2068864409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 2068864409 is about 45484.7711767356. The cubic root of 2068864409 is about 1274.2188030653.

The spelling of 2068864409 in words is "two billion, sixty-eight million, eight hundred sixty-four thousand, four hundred nine".