3813841566 has 24 divisors (see below), whose sum is σ = 8464869504. Its totient is φ = 1240273440.

The previous prime is 3813841543. The next prime is 3813841621. The reversal of 3813841566 is 6651483183.

3813841566 is a `hidden beast` number, since 3 + 8 + 1 + 3 + 84 + 1 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2583166 + ... + 2584641.

It is an arithmetic number, because the mean of its divisors is an integer number (352702896).

Almost surely, 2^3813841566 is an apocalyptic number.

3813841566 is an abundant number, since it is smaller than the sum of its proper divisors (4651027938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3813841566 is a wasteful number, since it uses less digits than its factorization.

3813841566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167856 (or 5167853 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 3813841566 is about 61756.3079045372. The cubic root of 3813841566 is about 1562.3831597410.

The spelling of 3813841566 in words is "three billion, eight hundred thirteen million, eight hundred forty-one thousand, five hundred sixty-six".