3805786656 has 144 divisors (see below), whose sum is σ = 12491938368. Its totient is φ = 1076544000.

The previous prime is 3805786639. The next prime is 3805786661. The reversal of 3805786656 is 6566875083.

3805786656 is a `hidden beast` number, since 3 + 8 + 0 + 578 + 6 + 65 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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, 194271 + ... + 212961.

It is an arithmetic number, because the mean of its divisors is an integer number (86749572).

Almost surely, 2^3805786656 is an apocalyptic number.

3805786656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3805786656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6245969184).

3805786656 is an abundant number, since it is smaller than the sum of its proper divisors (8686151712).

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

3805786656 is a wasteful number, since it uses less digits than its factorization.

3805786656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18815 (or 18804 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The square root of 3805786656 is about 61691.0581527015. The cubic root of 3805786656 is about 1561.2824562681.

The spelling of 3805786656 in words is "three billion, eight hundred five million, seven hundred eighty-six thousand, six hundred fifty-six".