2165310966 has 64 divisors (see below), whose sum is σ = 5474101248. Its totient is φ = 555631488.

The previous prime is 2165310947. The next prime is 2165310991. The reversal of 2165310966 is 6690135612.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 33390 + ... + 73793.

It is an arithmetic number, because the mean of its divisors is an integer number (85532832).

Almost surely, 2^2165310966 is an apocalyptic number.

2165310966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2165310966 is an abundant number, since it is smaller than the sum of its proper divisors (3308790282).

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

2165310966 is a wasteful number, since it uses less digits than its factorization.

2165310966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107245.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 2165310966 is about 46532.9019726902. The cubic root of 2165310966 is about 1293.7194033045.

The spelling of 2165310966 in words is "two billion, one hundred sixty-five million, three hundred ten thousand, nine hundred sixty-six".