318849621319 has 4 divisors (see below), whose sum is σ = 318851324896. Its totient is φ = 318847917744.

The previous prime is 318849621227. The next prime is 318849621347. The reversal of 318849621319 is 913126948813.

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: 913126948813 = 109 ⋅8377311457.

It is a cyclic number.

It is not a de Polignac number, because 318849621319 - 2⁹ = 318849620807 is a prime.

It is a super-2 number, since 2×318849621319² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 318849621319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318849625319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530694 + ... + 958819.

It is an arithmetic number, because the mean of its divisors is an integer number (79712831224).

Almost surely, 2^318849621319 is an apocalyptic number.

318849621319 is a deficient number, since it is larger than the sum of its proper divisors (1703577).

318849621319 is a wasteful number, since it uses less digits than its factorization.

318849621319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703576.

The product of its digits is 2239488, while the sum is 55.

The spelling of 318849621319 in words is "three hundred eighteen billion, eight hundred forty-nine million, six hundred twenty-one thousand, three hundred nineteen".