3665320289 has 2 divisors, whose sum is σ = 3665320290. Its totient is φ = 3665320288.

The previous prime is 3665320283. The next prime is 3665320349. The reversal of 3665320289 is 9820235663.

3665320289 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3635125264 + 30195025 = 60292^2 + 5495^2 .

It is a cyclic number.

It is not a de Polignac number, because 3665320289 - 2¹⁶ = 3665254753 is a prime.

It is not a weakly prime, because it can be changed into another prime (3665320283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832660144 + 1832660145.

It is an arithmetic number, because the mean of its divisors is an integer number (1832660145).

Almost surely, 2^3665320289 is an apocalyptic number.

It is an amenable number.

3665320289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665320289 is an equidigital number, since it uses as much as digits as its factorization.

3665320289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 3665320289 is about 60541.8887135180. Note that the first 3 decimals coincide. The cubic root of 3665320289 is about 1541.8329062998.

The spelling of 3665320289 in words is "three billion, six hundred sixty-five million, three hundred twenty thousand, two hundred eighty-nine".