3838186956809 has 2 divisors, whose sum is σ = 3838186956810. Its totient is φ = 3838186956808.

The previous prime is 3838186956781. The next prime is 3838186956823. The reversal of 3838186956809 is 9086596818383.

3838186956809 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., 2867315689225 + 970871267584 = 1693315^2 + 985328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3838186956809 is a prime.

It is not a weakly prime, because it can be changed into another prime (3838186956839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1919093478404 + 1919093478405.

It is an arithmetic number, because the mean of its divisors is an integer number (1919093478405).

Almost surely, 2^{3838186956809} is an apocalyptic number.

It is an amenable number.

3838186956809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3838186956809 is an equidigital number, since it uses as much as digits as its factorization.

3838186956809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 537477120, while the sum is 74.

The spelling of 3838186956809 in words is "three trillion, eight hundred thirty-eight billion, one hundred eighty-six million, nine hundred fifty-six thousand, eight hundred nine".