3855918673 has 2 divisors, whose sum is σ = 3855918674. Its totient is φ = 3855918672.

The previous prime is 3855918617. The next prime is 3855918679. The reversal of 3855918673 is 3768195583.

3855918673 is digitally balanced in base 2, 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., 3569226049 + 286692624 = 59743^2 + 16932^2 .

It is an emirp because it is prime and its reverse (3768195583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3855918673 - 2²⁹ = 3319047761 is a prime.

It is not a weakly prime, because it can be changed into another prime (3855918679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927959336 + 1927959337.

It is an arithmetic number, because the mean of its divisors is an integer number (1927959337).

Almost surely, 2^3855918673 is an apocalyptic number.

It is an amenable number.

3855918673 is a deficient number, since it is larger than the sum of its proper divisors (1).

3855918673 is an equidigital number, since it uses as much as digits as its factorization.

3855918673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 55.

The square root of 3855918673 is about 62096.0439400128. The cubic root of 3855918673 is about 1568.1079446861.

The spelling of 3855918673 in words is "three billion, eight hundred fifty-five million, nine hundred eighteen thousand, six hundred seventy-three".