2165628963 has 16 divisors (see below), whose sum is σ = 3190288896. Its totient is φ = 1299745920.

The previous prime is 2165628953. The next prime is 2165628967. The reversal of 2165628963 is 3698265612.

It is not a de Polignac number, because 2165628963 - 2⁵ = 2165628931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2165628967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 921943 + ... + 924288.

It is an arithmetic number, because the mean of its divisors is an integer number (199393056).

Almost surely, 2^2165628963 is an apocalyptic number.

2165628963 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2165628963 is a deficient number, since it is larger than the sum of its proper divisors (1024659933).

2165628963 is a wasteful number, since it uses less digits than its factorization.

2165628963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846274.

The product of its digits is 933120, while the sum is 48.

The square root of 2165628963 is about 46536.3187521317. The cubic root of 2165628963 is about 1293.7827319684.

The spelling of 2165628963 in words is "two billion, one hundred sixty-five million, six hundred twenty-eight thousand, nine hundred sixty-three".