3805912656 has 480 divisors, whose sum is σ = 14073765888. Its totient is φ = 968578560.

The previous prime is 3805912651. The next prime is 3805912657. The reversal of 3805912656 is 6562195083.

3805912656 is a `hidden beast` number, since 3 + 8 + 0 + 591 + 2 + 6 + 56 = 666.

3805912656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3805912656² = 28969942290201948672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3805912651) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10967875 + ... + 10968221.

Almost surely, 2^3805912656 is an apocalyptic number.

3805912656 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 3805912656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7036882944).

3805912656 is an abundant number, since it is smaller than the sum of its proper divisors (10267853232).

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

3805912656 is a wasteful number, since it uses less digits than its factorization.

3805912656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 3805912656 is about 61692.0793619408. The cubic root of 3805912656 is about 1561.2996861198.

The spelling of 3805912656 in words is "three billion, eight hundred five million, nine hundred twelve thousand, six hundred fifty-six".