318644545854 has 16 divisors (see below), whose sum is σ = 637517462400. Its totient is φ = 106176786840.

The previous prime is 318644545829. The next prime is 318644545859. The reversal of 318644545854 is 458545446813.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 318644545794 and 318644545803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318644545859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9497304 + ... + 9530795.

It is an arithmetic number, because the mean of its divisors is an integer number (39844841400).

Almost surely, 2^318644545854 is an apocalyptic number.

318644545854 is an abundant number, since it is smaller than the sum of its proper divisors (318872916546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318644545854 is a wasteful number, since it uses less digits than its factorization.

318644545854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19030895.

The product of its digits is 36864000, while the sum is 57.

The spelling of 318644545854 in words is "three hundred eighteen billion, six hundred forty-four million, five hundred forty-five thousand, eight hundred fifty-four".