2160889020 has 72 divisors (see below), whose sum is σ = 6559346976. Its totient is φ = 575828352.

The previous prime is 2160889009. The next prime is 2160889021. The reversal of 2160889020 is 209880612.

2160889020 is a `hidden beast` number, since 21 + 608 + 8 + 9 + 0 + 20 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2160889021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317574 + ... + 324306.

Almost surely, 2^2160889020 is an apocalyptic number.

2160889020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2160889020 is an abundant number, since it is smaller than the sum of its proper divisors (4398457956).

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

2160889020 is a wasteful number, since it uses less digits than its factorization.

2160889020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8531 (or 8526 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 2160889020 is about 46485.3635029350. The cubic root of 2160889020 is about 1292.8381355761.

The spelling of 2160889020 in words is "two billion, one hundred sixty million, eight hundred eighty-nine thousand, twenty".