1922208689 has 2 divisors, whose sum is σ = 1922208690. Its totient is φ = 1922208688.

The previous prime is 1922208643. The next prime is 1922208713. The reversal of 1922208689 is 9868022291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967707664 + 954501025 = 31108^2 + 30895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1922208689 - 2²⁰ = 1921160113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1922208389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961104344 + 961104345.

It is an arithmetic number, because the mean of its divisors is an integer number (961104345).

Almost surely, 2^1922208689 is an apocalyptic number.

It is an amenable number.

1922208689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922208689 is an equidigital number, since it uses as much as digits as its factorization.

1922208689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 1922208689 is about 43843.0004561732. Note that the first 3 decimals coincide. The cubic root of 1922208689 is about 1243.3694107380.

The spelling of 1922208689 in words is "one billion, nine hundred twenty-two million, two hundred eight thousand, six hundred eighty-nine".