2165959132 has 24 divisors (see below), whose sum is σ = 3903577664. Its totient is φ = 1050812352.

The previous prime is 2165959067. The next prime is 2165959231. The reversal of 2165959132 is 2319595612.

It is a super-2 number, since 2×2165959132² = 9382757922988386848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34378 + ... + 74254.

Almost surely, 2^2165959132 is an apocalyptic number.

It is an amenable number.

2165959132 is a deficient number, since it is larger than the sum of its proper divisors (1737618532).

2165959132 is a wasteful number, since it uses less digits than its factorization.

2165959132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40285 (or 40283 counting only the distinct ones).

The product of its digits is 145800, while the sum is 43.

The square root of 2165959132 is about 46539.8660505163. The cubic root of 2165959132 is about 1293.8484781099.

The spelling of 2165959132 in words is "two billion, one hundred sixty-five million, nine hundred fifty-nine thousand, one hundred thirty-two".