2161146117 has 16 divisors (see below), whose sum is σ = 3108381248. Its totient is φ = 1327708800.

The previous prime is 2161146109. The next prime is 2161146167. The reversal of 2161146117 is 7116411612.

It is not a de Polignac number, because 2161146117 - 2³ = 2161146109 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161146167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22663 + ... + 69540.

It is an arithmetic number, because the mean of its divisors is an integer number (194273828).

Almost surely, 2^2161146117 is an apocalyptic number.

It is an amenable number.

2161146117 is a deficient number, since it is larger than the sum of its proper divisors (947235131).

2161146117 is a wasteful number, since it uses less digits than its factorization.

2161146117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92820.

The product of its digits is 2016, while the sum is 30.

The square root of 2161146117 is about 46488.1287749894. The cubic root of 2161146117 is about 1292.8894063913.

Adding to 2161146117 its reverse (7116411612), we get a palindrome (9277557729).

The spelling of 2161146117 in words is "two billion, one hundred sixty-one million, one hundred forty-six thousand, one hundred seventeen".