318414390818 has 4 divisors (see below), whose sum is σ = 477621586230. Its totient is φ = 159207195408.

The previous prime is 318414390817. The next prime is 318414390871. The reversal of 318414390818 is 818093414813.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 818093414813 = 84137 ⋅9723349.

It can be written as a sum of positive squares in only one way, i.e., 213977480929 + 104436909889 = 462577^2 + 323167^2 .

It is not an unprimeable number, because it can be changed into a prime (318414390817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79603597703 + ... + 79603597706.

Almost surely, 2^318414390818 is an apocalyptic number.

318414390818 is a deficient number, since it is larger than the sum of its proper divisors (159207195412).

318414390818 is a wasteful number, since it uses less digits than its factorization.

318414390818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159207195411.

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 318414390818 in words is "three hundred eighteen billion, four hundred fourteen million, three hundred ninety thousand, eight hundred eighteen".