2184665961 has 16 divisors (see below), whose sum is σ = 3171931200. Its totient is φ = 1332209088.

The previous prime is 2184665941. The next prime is 2184665969. The reversal of 2184665961 is 1695664812.

2184665961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2184665961 - 2⁶ = 2184665897 is a prime.

It is a super-2 number, since 2×2184665961² = 9545530722304107042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2184665961.

It is not an unprimeable number, because it can be changed into a prime (2184665969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659166 + ... + 662471.

It is an arithmetic number, because the mean of its divisors is an integer number (198245700).

Almost surely, 2^2184665961 is an apocalyptic number.

It is an amenable number.

2184665961 is a deficient number, since it is larger than the sum of its proper divisors (987265239).

2184665961 is a wasteful number, since it uses less digits than its factorization.

2184665961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321688.

The product of its digits is 622080, while the sum is 48.

The square root of 2184665961 is about 46740.4103640522. The cubic root of 2184665961 is about 1297.5626839233.

The spelling of 2184665961 in words is "two billion, one hundred eighty-four million, six hundred sixty-five thousand, nine hundred sixty-one".