3856628161 has 8 divisors (see below), whose sum is σ = 4013206560. Its totient is φ = 3703090272.

The previous prime is 3856628147. The next prime is 3856628183. The reversal of 3856628161 is 1618266583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3856628161 - 2¹¹ = 3856626113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3856628101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757540 + ... + 762613.

It is an arithmetic number, because the mean of its divisors is an integer number (501650820).

Almost surely, 2^3856628161 is an apocalyptic number.

It is an amenable number.

3856628161 is a deficient number, since it is larger than the sum of its proper divisors (156578399).

3856628161 is a wasteful number, since it uses less digits than its factorization.

3856628161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520255.

The product of its digits is 414720, while the sum is 46.

The square root of 3856628161 is about 62101.7565049492. The cubic root of 3856628161 is about 1568.2041159347.

The spelling of 3856628161 in words is "three billion, eight hundred fifty-six million, six hundred twenty-eight thousand, one hundred sixty-one".