318220874180 has 36 divisors (see below), whose sum is σ = 734537940780. Its totient is φ = 115716680640.

The previous prime is 318220874143. The next prime is 318220874189. The reversal of 318220874180 is 81478022813.

It can be written as a sum of positive squares in 2 ways, for example, as 32259033664 + 285961840516 = 179608^2 + 534754^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (318220874189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65745695 + ... + 65750534.

Almost surely, 2^318220874180 is an apocalyptic number.

It is an amenable number.

318220874180 is an abundant number, since it is smaller than the sum of its proper divisors (416317066600).

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

318220874180 is a wasteful number, since it uses less digits than its factorization.

318220874180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131496260 (or 131496247 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

Adding to 318220874180 its reverse (81478022813), we get a palindrome (399698896993).

The spelling of 318220874180 in words is "three hundred eighteen billion, two hundred twenty million, eight hundred seventy-four thousand, one hundred eighty".