3856880436 has 12 divisors (see below), whose sum is σ = 8999387712. Its totient is φ = 1285626808.

The previous prime is 3856880411. The next prime is 3856880441. The reversal of 3856880436 is 6340886583.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 160703340 + ... + 160703363.

It is an arithmetic number, because the mean of its divisors is an integer number (749948976).

Almost surely, 2^3856880436 is an apocalyptic number.

It is an amenable number.

3856880436 is an abundant number, since it is smaller than the sum of its proper divisors (5142507276).

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

3856880436 is a wasteful number, since it uses less digits than its factorization.

3856880436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321406710 (or 321406708 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The square root of 3856880436 is about 62103.7876139612. The cubic root of 3856880436 is about 1568.2383090217.

The spelling of 3856880436 in words is "three billion, eight hundred fifty-six million, eight hundred eighty thousand, four hundred thirty-six".