631694794738 has 8 divisors (see below), whose sum is σ = 1082905362432. Its totient is φ = 270726340596.

The previous prime is 631694794727. The next prime is 631694794751. The reversal of 631694794738 is 837497496136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22560528370 + ... + 22560528397.

It is an arithmetic number, because the mean of its divisors is an integer number (135363170304).

Almost surely, 2^631694794738 is an apocalyptic number.

631694794738 is a deficient number, since it is larger than the sum of its proper divisors (451210567694).

631694794738 is a wasteful number, since it uses less digits than its factorization.

631694794738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45121056776.

The product of its digits is 164602368, while the sum is 67.

The spelling of 631694794738 in words is "six hundred thirty-one billion, six hundred ninety-four million, seven hundred ninety-four thousand, seven hundred thirty-eight".