638300814 has 16 divisors (see below), whose sum is σ = 1277655120. Its totient is φ = 212591360.

The previous prime is 638300779. The next prime is 638300821. The reversal of 638300814 is 418003836.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35907 + ... + 50654.

It is an arithmetic number, because the mean of its divisors is an integer number (79853445).

Almost surely, 2^638300814 is an apocalyptic number.

638300814 is an abundant number, since it is smaller than the sum of its proper divisors (639354306).

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

638300814 is a wasteful number, since it uses less digits than its factorization.

638300814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87795.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 638300814 is about 25264.6158490486. The cubic root of 638300814 is about 861.0105364672.

The spelling of 638300814 in words is "six hundred thirty-eight million, three hundred thousand, eight hundred fourteen".