2669785289 has 2 divisors, whose sum is σ = 2669785290. Its totient is φ = 2669785288.

The previous prime is 2669785277. The next prime is 2669785291. The reversal of 2669785289 is 9825879662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2324011264 + 345774025 = 48208^2 + 18595^2 .

It is a cyclic number.

It is not a de Polignac number, because 2669785289 - 2⁸ = 2669785033 is a prime.

Together with 2669785291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2669785219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334892644 + 1334892645.

It is an arithmetic number, because the mean of its divisors is an integer number (1334892645).

Almost surely, 2^2669785289 is an apocalyptic number.

It is an amenable number.

2669785289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2669785289 is an equidigital number, since it uses as much as digits as its factorization.

2669785289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 62.

The square root of 2669785289 is about 51669.9650570813. The cubic root of 2669785289 is about 1387.2629210926.

The spelling of 2669785289 in words is "two billion, six hundred sixty-nine million, seven hundred eighty-five thousand, two hundred eighty-nine".