2164785304 has 64 divisors (see below), whose sum is σ = 4839782400. Its totient is φ = 896217600.

The previous prime is 2164785257. The next prime is 2164785313. The reversal of 2164785304 is 4035874612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23037 + ... + 69715.

It is an arithmetic number, because the mean of its divisors is an integer number (75621600).

Almost surely, 2^2164785304 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 2164785304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2419891200).

2164785304 is an abundant number, since it is smaller than the sum of its proper divisors (2674997096).

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

2164785304 is a wasteful number, since it uses less digits than its factorization.

2164785304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46744 (or 46740 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 2164785304 is about 46527.2533468289. The cubic root of 2164785304 is about 1293.6147048449.

The spelling of 2164785304 in words is "two billion, one hundred sixty-four million, seven hundred eighty-five thousand, three hundred four".