2165306976 has 72 divisors (see below), whose sum is σ = 7037254224. Its totient is φ = 618658560.

The previous prime is 2165306959. The next prime is 2165306989. The reversal of 2165306976 is 6796035612.

2165306976 is a `hidden beast` number, since 21 + 6 + 530 + 6 + 97 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 535015 + ... + 539046.

It is an arithmetic number, because the mean of its divisors is an integer number (97739642).

Almost surely, 2^2165306976 is an apocalyptic number.

It is an amenable number.

2165306976 is an abundant number, since it is smaller than the sum of its proper divisors (4871947248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2165306976 is a wasteful number, since it uses less digits than its factorization.

2165306976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074084 (or 1074073 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 2165306976 is about 46532.8590997802. The cubic root of 2165306976 is about 1293.7186086621.

The spelling of 2165306976 in words is "two billion, one hundred sixty-five million, three hundred six thousand, nine hundred seventy-six".