5638343280 has 160 divisors (see below), whose sum is σ = 18408107520. Its totient is φ = 1424839680.

The previous prime is 5638343189. The next prime is 5638343317. The reversal of 5638343280 is 823438365.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596995 + ... + 606365.

It is an arithmetic number, because the mean of its divisors is an integer number (115050672).

Almost surely, 2^5638343280 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 5638343280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9204053760).

5638343280 is an abundant number, since it is smaller than the sum of its proper divisors (12769764240).

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

5638343280 is a wasteful number, since it uses less digits than its factorization.

5638343280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9519 (or 9513 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 5638343280 is about 75088.9025089593. The cubic root of 5638343280 is about 1779.8517824656.

The spelling of 5638343280 in words is "five billion, six hundred thirty-eight million, three hundred forty-three thousand, two hundred eighty".