3927857161 has 8 divisors (see below), whose sum is σ = 4005271424. Its totient is φ = 3850863120.

The previous prime is 3927857051. The next prime is 3927857173. The reversal of 3927857161 is 1617587293.

It is a happy number.

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 3927857161 - 2⁹ = 3927856649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3927857261) 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, 86145 + ... + 123598.

It is an arithmetic number, because the mean of its divisors is an integer number (500658928).

Almost surely, 2^3927857161 is an apocalyptic number.

It is an amenable number.

3927857161 is a deficient number, since it is larger than the sum of its proper divisors (77414263).

3927857161 is a wasteful number, since it uses less digits than its factorization.

3927857161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210111.

The product of its digits is 635040, while the sum is 49.

The square root of 3927857161 is about 62672.6189096961. The cubic root of 3927857161 is about 1577.7997951421.

The spelling of 3927857161 in words is "three billion, nine hundred twenty-seven million, eight hundred fifty-seven thousand, one hundred sixty-one".