2164937328 has 80 divisors (see below), whose sum is σ = 6414668800. Its totient is φ = 698362560.

The previous prime is 2164937287. The next prime is 2164937329. The reversal of 2164937328 is 8237394612.

2164937328 is a `hidden beast` number, since 216 + 49 + 373 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164937329) 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, 67438 + ... + 94221.

It is an arithmetic number, because the mean of its divisors is an integer number (80183360).

Almost surely, 2^2164937328 is an apocalyptic number.

It is an amenable number.

2164937328 is an abundant number, since it is smaller than the sum of its proper divisors (4249731472).

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

2164937328 is a wasteful number, since it uses less digits than its factorization.

2164937328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161707 (or 161695 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 2164937328 is about 46528.8870273081. The cubic root of 2164937328 is about 1293.6449858891.

The spelling of 2164937328 in words is "two billion, one hundred sixty-four million, nine hundred thirty-seven thousand, three hundred twenty-eight".