638808114 has 64 divisors (see below), whose sum is σ = 1542758400. Its totient is φ = 172458048.

The previous prime is 638808113. The next prime is 638808169. The reversal of 638808114 is 411808836.

It is a super-3 number, since 3×638808114³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (638808113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51667 + ... + 62825.

It is an arithmetic number, because the mean of its divisors is an integer number (24105600).

Almost surely, 2^638808114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 638808114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771379200).

638808114 is an abundant number, since it is smaller than the sum of its proper divisors (903950286).

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

638808114 is a wasteful number, since it uses less digits than its factorization.

638808114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11247.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 638808114 is about 25274.6535881305. The cubic root of 638808114 is about 861.2385767951.

The spelling of 638808114 in words is "six hundred thirty-eight million, eight hundred eight thousand, one hundred fourteen".