318497433646 has 32 divisors (see below), whose sum is σ = 547867791360. Its totient is φ = 136031658336.

The previous prime is 318497433643. The next prime is 318497433647. The reversal of 318497433646 is 646334794813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318497433643) 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 15 ways as a sum of consecutive naturals, for example, 4793971 + ... + 4859953.

It is an arithmetic number, because the mean of its divisors is an integer number (17120868480).

Almost surely, 2^318497433646 is an apocalyptic number.

318497433646 is a deficient number, since it is larger than the sum of its proper divisors (229370357714).

318497433646 is a wasteful number, since it uses less digits than its factorization.

318497433646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67168.

The product of its digits is 31352832, while the sum is 58.

The spelling of 318497433646 in words is "three hundred eighteen billion, four hundred ninety-seven million, four hundred thirty-three thousand, six hundred forty-six".