2168065964 has 12 divisors (see below), whose sum is σ = 4017298824. Its totient is φ = 1020266304.

The previous prime is 2168065957. The next prime is 2168065969. The reversal of 2168065964 is 4695608612.

It is not an unprimeable number, because it can be changed into a prime (2168065969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15941594 + ... + 15941729.

It is an arithmetic number, because the mean of its divisors is an integer number (334774902).

Almost surely, 2^2168065964 is an apocalyptic number.

It is an amenable number.

2168065964 is a deficient number, since it is larger than the sum of its proper divisors (1849232860).

2168065964 is a wasteful number, since it uses less digits than its factorization.

2168065964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31883344 (or 31883342 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 2168065964 is about 46562.4952510065. The cubic root of 2168065964 is about 1294.2678516763.

The spelling of 2168065964 in words is "two billion, one hundred sixty-eight million, sixty-five thousand, nine hundred sixty-four".