1317839693194 has 4 divisors (see below), whose sum is σ = 1976759539794. Its totient is φ = 658919846596.

The previous prime is 1317839693171. The next prime is 1317839693231. The reversal of 1317839693194 is 4913969387131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1069182884169 + 248656809025 = 1034013^2 + 498655^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329459923297 + ... + 329459923300.

Almost surely, 2^{1317839693194} is an apocalyptic number.

1317839693194 is a deficient number, since it is larger than the sum of its proper divisors (658919846600).

1317839693194 is an equidigital number, since it uses as much as digits as its factorization.

1317839693194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658919846599.

The product of its digits is 26453952, while the sum is 64.

The spelling of 1317839693194 in words is "one trillion, three hundred seventeen billion, eight hundred thirty-nine million, six hundred ninety-three thousand, one hundred ninety-four".