2165100556 has 12 divisors (see below), whose sum is σ = 3802316392. Its totient is φ = 1078724448.

The previous prime is 2165100523. The next prime is 2165100563. The reversal of 2165100556 is 6550015612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955185 + ... + 957448.

Almost surely, 2^2165100556 is an apocalyptic number.

It is an amenable number.

2165100556 is a deficient number, since it is larger than the sum of its proper divisors (1637215836).

2165100556 is a wasteful number, since it uses less digits than its factorization.

2165100556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912920 (or 1912918 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 2165100556 is about 46530.6410443699. The cubic root of 2165100556 is about 1293.6774970346.

The spelling of 2165100556 in words is "two billion, one hundred sixty-five million, one hundred thousand, five hundred fifty-six".