2160280821 has 16 divisors (see below), whose sum is σ = 2902852800. Its totient is φ = 1428969600.

The previous prime is 2160280817. The next prime is 2160280841. The reversal of 2160280821 is 1280820612.

It is not a de Polignac number, because 2160280821 - 2² = 2160280817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2160280841) 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 15 ways as a sum of consecutive naturals, for example, 531246 + ... + 535296.

It is an arithmetic number, because the mean of its divisors is an integer number (181428300).

Almost surely, 2^2160280821 is an apocalyptic number.

It is an amenable number.

2160280821 is a deficient number, since it is larger than the sum of its proper divisors (742571979).

2160280821 is a wasteful number, since it uses less digits than its factorization.

2160280821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 2160280821 is about 46478.8212092346. The cubic root of 2160280821 is about 1292.7168310827.

The spelling of 2160280821 in words is "two billion, one hundred sixty million, two hundred eighty thousand, eight hundred twenty-one".