2182682161 has 4 divisors (see below), whose sum is σ = 2381107824. Its totient is φ = 1984256500.

The previous prime is 2182682149. The next prime is 2182682179. The reversal of 2182682161 is 1612862812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2182682161 - 2¹⁵ = 2182649393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2182682161.

It is not an unprimeable number, because it can be changed into a prime (2182682461) 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 3 ways as a sum of consecutive naturals, for example, 99212815 + ... + 99212836.

It is an arithmetic number, because the mean of its divisors is an integer number (595276956).

Almost surely, 2^2182682161 is an apocalyptic number.

It is an amenable number.

2182682161 is a deficient number, since it is larger than the sum of its proper divisors (198425663).

2182682161 is a wasteful number, since it uses less digits than its factorization.

2182682161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198425662.

The product of its digits is 18432, while the sum is 37.

The square root of 2182682161 is about 46719.1840789199. The cubic root of 2182682161 is about 1297.1698115978.

The spelling of 2182682161 in words is "two billion, one hundred eighty-two million, six hundred eighty-two thousand, one hundred sixty-one".