2165933768 has 16 divisors (see below), whose sum is σ = 4098385500. Its totient is φ = 1073030976.

The previous prime is 2165933753. The next prime is 2165933797. The reversal of 2165933768 is 8673395612.

It can be written as a sum of positive squares in 2 ways, for example, as 2154630724 + 11303044 = 46418^2 + 3362^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241063 + ... + 1242806.

Almost surely, 2^2165933768 is an apocalyptic number.

It is an amenable number.

2165933768 is a deficient number, since it is larger than the sum of its proper divisors (1932451732).

2165933768 is a wasteful number, since it uses less digits than its factorization.

2165933768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483984 (or 2483980 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 2165933768 is about 46539.5935521573. The cubic root of 2165933768 is about 1293.8434276451.

The spelling of 2165933768 in words is "two billion, one hundred sixty-five million, nine hundred thirty-three thousand, seven hundred sixty-eight".