318819443944 has 8 divisors (see below), whose sum is σ = 597786457410. Its totient is φ = 159409721968.

The previous prime is 318819443933. The next prime is 318819443953. The reversal of 318819443944 is 449344918813.

It can be written as a sum of positive squares in only one way, i.e., 236547995044 + 82271448900 = 486362^2 + 286830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×318819443944² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19926215239 + ... + 19926215254.

Almost surely, 2^318819443944 is an apocalyptic number.

It is an amenable number.

318819443944 is a deficient number, since it is larger than the sum of its proper divisors (278967013466).

318819443944 is a wasteful number, since it uses less digits than its factorization.

318819443944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39852430499 (or 39852430495 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 58.

The spelling of 318819443944 in words is "three hundred eighteen billion, eight hundred nineteen million, four hundred forty-three thousand, nine hundred forty-four".