2668488409 has 2 divisors, whose sum is σ = 2668488410. Its totient is φ = 2668488408.

The previous prime is 2668488397. The next prime is 2668488439. The reversal of 2668488409 is 9048848662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1399134025 + 1269354384 = 37405^2 + 35628^2 .

It is a cyclic number.

It is not a de Polignac number, because 2668488409 - 2¹⁹ = 2667964121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2668488409.

It is not a weakly prime, because it can be changed into another prime (2668488439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334244204 + 1334244205.

It is an arithmetic number, because the mean of its divisors is an integer number (1334244205).

Almost surely, 2^2668488409 is an apocalyptic number.

It is an amenable number.

2668488409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668488409 is an equidigital number, since it uses as much as digits as its factorization.

2668488409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5308416, while the sum is 55.

The square root of 2668488409 is about 51657.4138822299. The cubic root of 2668488409 is about 1387.0382582160.

The spelling of 2668488409 in words is "two billion, six hundred sixty-eight million, four hundred eighty-eight thousand, four hundred nine".