638300005 has 32 divisors (see below), whose sum is σ = 909792000. Its totient is φ = 420628992.

The previous prime is 638299973. The next prime is 638300017. The reversal of 638300005 is 500003836.

638300005 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 638300005 - 2⁵ = 638299973 is a prime.

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, 235146 + ... + 237844.

It is an arithmetic number, because the mean of its divisors is an integer number (28431000).

Almost surely, 2^638300005 is an apocalyptic number.

It is an amenable number.

638300005 is a deficient number, since it is larger than the sum of its proper divisors (271491995).

638300005 is a wasteful number, since it uses less digits than its factorization.

638300005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 638300005 is about 25264.5998385092. The cubic root of 638300005 is about 861.0101727109.

The spelling of 638300005 in words is "six hundred thirty-eight million, three hundred thousand, five".