3189942689 has 2 divisors, whose sum is σ = 3189942690. Its totient is φ = 3189942688.

The previous prime is 3189942683. The next prime is 3189942709. The reversal of 3189942689 is 9862499813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3010168225 + 179774464 = 54865^2 + 13408^2 .

It is a cyclic number.

It is not a de Polignac number, because 3189942689 - 2⁴ = 3189942673 is a prime.

It is not a weakly prime, because it can be changed into another prime (3189942683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1594971344 + 1594971345.

It is an arithmetic number, because the mean of its divisors is an integer number (1594971345).

Almost surely, 2^3189942689 is an apocalyptic number.

It is an amenable number.

3189942689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3189942689 is an equidigital number, since it uses as much as digits as its factorization.

3189942689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 59.

The square root of 3189942689 is about 56479.5776276700. The cubic root of 3189942689 is about 1472.0671688358.

The spelling of 3189942689 in words is "three billion, one hundred eighty-nine million, nine hundred forty-two thousand, six hundred eighty-nine".