3855913169 has 2 divisors, whose sum is σ = 3855913170. Its totient is φ = 3855913168.

The previous prime is 3855913141. The next prime is 3855913231. The reversal of 3855913169 is 9613195583.

3855913169 is digitally balanced in base 3, because in such base 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., 3460380625 + 395532544 = 58825^2 + 19888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3855913169 is a prime.

It is a super-3 number, since 3×3855913169³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (3855913129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927956584 + 1927956585.

It is an arithmetic number, because the mean of its divisors is an integer number (1927956585).

Almost surely, 2^3855913169 is an apocalyptic number.

It is an amenable number.

3855913169 is a deficient number, since it is larger than the sum of its proper divisors (1).

3855913169 is an equidigital number, since it uses as much as digits as its factorization.

3855913169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 50.

The square root of 3855913169 is about 62095.9996215537. Note that the first 3 decimals coincide. The cubic root of 3855913169 is about 1568.1071985716.

The spelling of 3855913169 in words is "three billion, eight hundred fifty-five million, nine hundred thirteen thousand, one hundred sixty-nine".