318438682 has 4 divisors (see below), whose sum is σ = 477658026. Its totient is φ = 159219340.

The previous prime is 318438667. The next prime is 318438691. The reversal of 318438682 is 286834813.

318438682 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 286834813 = 59 ⋅4861607.

It can be written as a sum of positive squares in only one way, i.e., 278255761 + 40182921 = 16681^2 + 6339^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79609669 + ... + 79609672.

Almost surely, 2^318438682 is an apocalyptic number.

318438682 is a deficient number, since it is larger than the sum of its proper divisors (159219344).

318438682 is a wasteful number, since it uses less digits than its factorization.

318438682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159219343.

The product of its digits is 221184, while the sum is 43.

The square root of 318438682 is about 17844.8502935721. The cubic root of 318438682 is about 682.8761411081.

The spelling of 318438682 in words is "three hundred eighteen million, four hundred thirty-eight thousand, six hundred eighty-two".