634872338 has 4 divisors (see below), whose sum is σ = 952308510. Its totient is φ = 317436168.

The previous prime is 634872317. The next prime is 634872347. The reversal of 634872338 is 833278436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 618168769 + 16703569 = 24863^2 + 4087^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158718083 + ... + 158718086.

Almost surely, 2^634872338 is an apocalyptic number.

634872338 is a deficient number, since it is larger than the sum of its proper divisors (317436172).

634872338 is a wasteful number, since it uses less digits than its factorization.

634872338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317436171.

The product of its digits is 580608, while the sum is 44.

The square root of 634872338 is about 25196.6731534145. The cubic root of 634872338 is about 859.4661992963.

The spelling of 634872338 in words is "six hundred thirty-four million, eight hundred seventy-two thousand, three hundred thirty-eight".