2164534512 has 80 divisors (see below), whose sum is σ = 6399233280. Its totient is φ = 617596416.

The previous prime is 2164534499. The next prime is 2164534513. The reversal of 2164534512 is 2154354612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164534513) 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, 267843 + ... + 275805.

It is an arithmetic number, because the mean of its divisors is an integer number (79990416).

Almost surely, 2^2164534512 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 2164534512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3199616640).

2164534512 is an abundant number, since it is smaller than the sum of its proper divisors (4234698768).

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

2164534512 is a wasteful number, since it uses less digits than its factorization.

2164534512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8790 (or 8784 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 2164534512 is about 46524.5581601803. The cubic root of 2164534512 is about 1293.5647475046.

The spelling of 2164534512 in words is "two billion, one hundred sixty-four million, five hundred thirty-four thousand, five hundred twelve".