2165169792 has 64 divisors (see below), whose sum is σ = 5762763360. Its totient is φ = 720276480.

The previous prime is 2165169763. The next prime is 2165169803. The reversal of 2165169792 is 2979615612.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 195442 + ... + 206222.

Almost surely, 2^2165169792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2165169792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2881381680).

2165169792 is an abundant number, since it is smaller than the sum of its proper divisors (3597593568).

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

2165169792 is a wasteful number, since it uses less digits than its factorization.

2165169792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11321 (or 11309 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 2165169792 is about 46531.3850212950. The cubic root of 2165169792 is about 1293.6912867098.

The spelling of 2165169792 in words is "two billion, one hundred sixty-five million, one hundred sixty-nine thousand, seven hundred ninety-two".