3945879161 has 8 divisors (see below), whose sum is σ = 4516937664. Its totient is φ = 3376661040.

The previous prime is 3945879151. The next prime is 3945879167. The reversal of 3945879161 is 1619785493.

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 3945879161 - 2¹⁴ = 3945862777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3945879167) 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, 455495 + ... + 464076.

It is an arithmetic number, because the mean of its divisors is an integer number (564617208).

Almost surely, 2^3945879161 is an apocalyptic number.

It is an amenable number.

3945879161 is a deficient number, since it is larger than the sum of its proper divisors (571058503).

3945879161 is an equidigital number, since it uses as much as digits as its factorization.

3945879161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920191.

The product of its digits is 1632960, while the sum is 53.

The square root of 3945879161 is about 62816.2332602011. The cubic root of 3945879161 is about 1580.2092284209.

The spelling of 3945879161 in words is "three billion, nine hundred forty-five million, eight hundred seventy-nine thousand, one hundred sixty-one".