318004018 has 4 divisors (see below), whose sum is σ = 477006030. Its totient is φ = 159002008.

The previous prime is 318004013. The next prime is 318004019. The reversal of 318004018 is 810400813.

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., 222218649 + 95785369 = 14907^2 + 9787^2 .

It is a super-2 number, since 2×318004018² = 202253110928288648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318003983 and 318004001.

It is not an unprimeable number, because it can be changed into a prime (318004013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79501003 + ... + 79501006.

Almost surely, 2^318004018 is an apocalyptic number.

318004018 is a deficient number, since it is larger than the sum of its proper divisors (159002012).

318004018 is a wasteful number, since it uses less digits than its factorization.

318004018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159002011.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 318004018 is about 17832.6671588969. The cubic root of 318004018 is about 682.5652944191.

The spelling of 318004018 in words is "three hundred eighteen million, four thousand, eighteen".