5317938644 has 6 divisors (see below), whose sum is σ = 9306392634. Its totient is φ = 2658969320.

The previous prime is 5317938631. The next prime is 5317938667. The reversal of 5317938644 is 4468397135.

It can be written as a sum of positive squares in only one way, i.e., 5062322500 + 255616144 = 71150^2 + 15988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5317938592 and 5317938601.

It is a congruent number.

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, 664742327 + ... + 664742334.

It is an arithmetic number, because the mean of its divisors is an integer number (1551065439).

Almost surely, 2^5317938644 is an apocalyptic number.

It is an amenable number.

5317938644 is a deficient number, since it is larger than the sum of its proper divisors (3988453990).

5317938644 is a wasteful number, since it uses less digits than its factorization.

5317938644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329484665 (or 1329484663 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The square root of 5317938644 is about 72924.1979318251. The cubic root of 5317938644 is about 1745.4782469264.

The spelling of 5317938644 in words is "five billion, three hundred seventeen million, nine hundred thirty-eight thousand, six hundred forty-four".