2165334816 has 48 divisors (see below), whose sum is σ = 5931140544. Its totient is φ = 690395904.

The previous prime is 2165334811. The next prime is 2165334817. The reversal of 2165334816 is 6184335612.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (2165334811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488131 + ... + 492546.

It is an arithmetic number, because the mean of its divisors is an integer number (123565428).

Almost surely, 2^2165334816 is an apocalyptic number.

It is an amenable number.

2165334816 is an abundant number, since it is smaller than the sum of its proper divisors (3765805728).

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

2165334816 is a wasteful number, since it uses less digits than its factorization.

2165334816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980713 (or 980705 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 2165334816 is about 46533.1582422685. The cubic root of 2165334816 is about 1293.7241532142.

The spelling of 2165334816 in words is "two billion, one hundred sixty-five million, three hundred thirty-four thousand, eight hundred sixteen".