3021680538 has 120 divisors (see below), whose sum is σ = 7249459932. Its totient is φ = 940502016.

The previous prime is 3021680537. The next prime is 3021680587. The reversal of 3021680538 is 8350861203.

3021680538 is a `hidden beast` number, since 30 + 2 + 16 + 80 + 538 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1383616809 + 1638063729 = 37197^2 + 40473^2 .

It is not an unprimeable number, because it can be changed into a prime (3021680531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 10908456 + ... + 10908732.

Almost surely, 2^3021680538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3021680538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3624729966).

3021680538 is an abundant number, since it is smaller than the sum of its proper divisors (4227779394).

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

3021680538 is a wasteful number, since it uses less digits than its factorization.

3021680538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3021680538 is about 54969.8147895734. The cubic root of 3021680538 is about 1445.7155395054.

The spelling of 3021680538 in words is "three billion, twenty-one million, six hundred eighty thousand, five hundred thirty-eight".