3189688840909 has 2 divisors, whose sum is σ = 3189688840910. Its totient is φ = 3189688840908.

The previous prime is 3189688840883. The next prime is 3189688840913. The reversal of 3189688840909 is 9090488869813.

3189688840909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3189688840900 + 9 = 1785970^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 3189688840909 - 2⁷ = 3189688840781 is a prime.

It is a super-2 number, since 2×3189688840909² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3189688840979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1594844420454 + 1594844420455.

It is an arithmetic number, because the mean of its divisors is an integer number (1594844420455).

Almost surely, 2^{3189688840909} is an apocalyptic number.

It is an amenable number.

3189688840909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3189688840909 is an equidigital number, since it uses as much as digits as its factorization.

3189688840909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214990848, while the sum is 73.

The spelling of 3189688840909 in words is "three trillion, one hundred eighty-nine billion, six hundred eighty-eight million, eight hundred forty thousand, nine hundred nine".