2161743115 has 16 divisors (see below), whose sum is σ = 2965450752. Its totient is φ = 1481950944.

The previous prime is 2161743109. The next prime is 2161743121. The reversal of 2161743115 is 5113471612.

It is an interprime number because it is at equal distance from previous prime (2161743109) and next prime (2161743121).

It is a cyclic number.

It is not a de Polignac number, because 2161743115 - 2¹¹ = 2161741067 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213702 + ... + 223588.

It is an arithmetic number, because the mean of its divisors is an integer number (185340672).

Almost surely, 2^2161743115 is an apocalyptic number.

2161743115 is a deficient number, since it is larger than the sum of its proper divisors (803707637).

2161743115 is an equidigital number, since it uses as much as digits as its factorization.

2161743115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16146.

The product of its digits is 5040, while the sum is 31.

The square root of 2161743115 is about 46494.5493041926. The cubic root of 2161743115 is about 1293.0084452849.

The spelling of 2161743115 in words is "two billion, one hundred sixty-one million, seven hundred forty-three thousand, one hundred fifteen".