3894368805 has 24 divisors (see below), whose sum is σ = 6914882520. Its totient is φ = 2026337280.

The previous prime is 3894368759. The next prime is 3894368813. The reversal of 3894368805 is 5088634983.

It is a happy number.

3894368805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 270569601 + 3623799204 = 16449^2 + 60198^2 .

It is not a de Polignac number, because 3894368805 - 2¹⁰ = 3894367781 is a prime.

It is a super-2 number, since 2×3894368805² = 30332216778714256050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1053540 + ... + 1057229.

It is an arithmetic number, because the mean of its divisors is an integer number (288120105).

Almost surely, 2^3894368805 is an apocalyptic number.

It is an amenable number.

3894368805 is a deficient number, since it is larger than the sum of its proper divisors (3020513715).

3894368805 is a wasteful number, since it uses less digits than its factorization.

3894368805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110821 (or 2110818 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The square root of 3894368805 is about 62404.8780545239. The cubic root of 3894368805 is about 1573.3029582087.

The spelling of 3894368805 in words is "three billion, eight hundred ninety-four million, three hundred sixty-eight thousand, eight hundred five".