5638182780 has 96 divisors (see below), whose sum is σ = 16182190080. Its totient is φ = 1466277120.

The previous prime is 5638182757. The next prime is 5638182853. The reversal of 5638182780 is 872818365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443310 + ... + 455850.

It is an arithmetic number, because the mean of its divisors is an integer number (168564480).

Almost surely, 2^5638182780 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 5638182780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8091095040).

5638182780 is an abundant number, since it is smaller than the sum of its proper divisors (10544007300).

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

5638182780 is a wasteful number, since it uses less digits than its factorization.

5638182780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12739 (or 12737 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 5638182780 is about 75087.8337681944. The cubic root of 5638182780 is about 1779.8348939987.

The spelling of 5638182780 in words is "five billion, six hundred thirty-eight million, one hundred eighty-two thousand, seven hundred eighty".