2147165280 has 576 divisors, whose sum is σ = 8666118720. Its totient is φ = 494567424.

The previous prime is 2147165261. The next prime is 2147165333. The reversal of 2147165280 is 825617412.

2147165280 is a `hidden beast` number, since 214 + 7 + 165 + 280 = 666.

It is a super-2 number, since 2×2147165280² = 9220637479274956800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12411274 + ... + 12411446.

It is an arithmetic number, because the mean of its divisors is an integer number (15045345).

Almost surely, 2^2147165280 is an apocalyptic number.

2147165280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2147165280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4333059360).

2147165280 is an abundant number, since it is smaller than the sum of its proper divisors (6518953440).

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

2147165280 is a wasteful number, since it uses less digits than its factorization.

2147165280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 2147165280 is about 46337.5148233049. The cubic root of 2147165280 is about 1290.0953958658.

The spelling of 2147165280 in words is "two billion, one hundred forty-seven million, one hundred sixty-five thousand, two hundred eighty".