5389680640 has 92 divisors (see below), whose sum is σ = 12985563636. Its totient is φ = 2147483648.

The previous prime is 5389680631. The next prime is 5389680649. The reversal of 5389680640 is 460869835.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5389680631) and next prime (5389680649).

It can be written as a sum of positive squares in 2 ways, for example, as 4030726144 + 1358954496 = 63488^2 + 36864^2 .

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5389680649) by changing a digit.

In principle, a polygon with 5389680640 sides can be constructed with ruler and compass.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20971392 + ... + 20971648.

Almost surely, 2^5389680640 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 5389680640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6492781818).

5389680640 is an abundant number, since it is smaller than the sum of its proper divisors (7595882996).

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

5389680640 is an frugal number, since it uses more digits than its factorization.

5389680640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 5389680640 is about 73414.4443553174. Note that the first 3 decimals coincide. The cubic root of 5389680640 is about 1753.2923750434.

The spelling of 5389680640 in words is "five billion, three hundred eighty-nine million, six hundred eighty thousand, six hundred forty".