317936394638 has 16 divisors (see below), whose sum is σ = 498145890816. Its totient is φ = 151901828760.

The previous prime is 317936394617. The next prime is 317936394667. The reversal of 317936394638 is 836493639713.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3470378 + ... + 3560813.

It is an arithmetic number, because the mean of its divisors is an integer number (31134118176).

Almost surely, 2^317936394638 is an apocalyptic number.

317936394638 is a deficient number, since it is larger than the sum of its proper divisors (180209496178).

317936394638 is a wasteful number, since it uses less digits than its factorization.

317936394638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7032199.

The product of its digits is 52907904, while the sum is 62.

The spelling of 317936394638 in words is "three hundred seventeen billion, nine hundred thirty-six million, three hundred ninety-four thousand, six hundred thirty-eight".