638327116 has 96 divisors (see below), whose sum is σ = 1403136000. Its totient is φ = 253169280.

The previous prime is 638327113. The next prime is 638327147. The reversal of 638327116 is 611723836.

It is not an unprimeable number, because it can be changed into a prime (638327113) by changing a digit.

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, 1224936 + ... + 1225456.

It is an arithmetic number, because the mean of its divisors is an integer number (14616000).

Almost surely, 2^638327116 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 638327116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701568000).

638327116 is an abundant number, since it is smaller than the sum of its proper divisors (764808884).

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

638327116 is a wasteful number, since it uses less digits than its factorization.

638327116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 596 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 638327116 is about 25265.1363740630. The cubic root of 638327116 is about 861.0223626509.

The spelling of 638327116 in words is "six hundred thirty-eight million, three hundred twenty-seven thousand, one hundred sixteen".