3118847161 has 4 divisors (see below), whose sum is σ = 3122205300. Its totient is φ = 3115489024.

The previous prime is 3118847129. The next prime is 3118847189. The reversal of 3118847161 is 1617488113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1617488113 = 683 ⋅2368211.

It can be written as a sum of positive squares in 2 ways, for example, as 1563727936 + 1555119225 = 39544^2 + 39435^2 .

It is a cyclic number.

It is not a de Polignac number, because 3118847161 - 2⁵ = 3118847129 is a prime.

It is a super-2 number, since 2×3118847161² = 19454415227355519842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3118847261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677676 + ... + 1679533.

It is an arithmetic number, because the mean of its divisors is an integer number (780551325).

Almost surely, 2^3118847161 is an apocalyptic number.

It is an amenable number.

3118847161 is a deficient number, since it is larger than the sum of its proper divisors (3358139).

3118847161 is an equidigital number, since it uses as much as digits as its factorization.

3118847161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358138.

The product of its digits is 32256, while the sum is 40.

The square root of 3118847161 is about 55846.6396571898. The cubic root of 3118847161 is about 1461.0487181272.

The spelling of 3118847161 in words is "three billion, one hundred eighteen million, eight hundred forty-seven thousand, one hundred sixty-one".