638174234 has 8 divisors (see below), whose sum is σ = 960901920. Its totient is φ = 317873596.

The previous prime is 638174213. The next prime is 638174239. The reversal of 638174234 is 432471836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (638174239) 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 3 ways as a sum of consecutive naturals, for example, 606104 + ... + 607155.

It is an arithmetic number, because the mean of its divisors is an integer number (120112740).

Almost surely, 2^638174234 is an apocalyptic number.

638174234 is a deficient number, since it is larger than the sum of its proper divisors (322727686).

638174234 is a wasteful number, since it uses less digits than its factorization.

638174234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213524.

The product of its digits is 96768, while the sum is 38.

The square root of 638174234 is about 25262.1106402454. The cubic root of 638174234 is about 860.9536176830.

The spelling of 638174234 in words is "six hundred thirty-eight million, one hundred seventy-four thousand, two hundred thirty-four".