1317954005 has 4 divisors (see below), whose sum is σ = 1581544812. Its totient is φ = 1054363200.

The previous prime is 1317953969. The next prime is 1317954007. The reversal of 1317954005 is 5004597131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5004597131 = 19 ⋅263399849.

It can be written as a sum of positive squares in 2 ways, for example, as 193961329 + 1123992676 = 13927^2 + 33526^2 .

It is not a de Polignac number, because 1317954005 - 2¹⁸ = 1317691861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317954007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131795396 + ... + 131795405.

It is an arithmetic number, because the mean of its divisors is an integer number (395386203).

Almost surely, 2^1317954005 is an apocalyptic number.

It is an amenable number.

1317954005 is a deficient number, since it is larger than the sum of its proper divisors (263590807).

1317954005 is an equidigital number, since it uses as much as digits as its factorization.

1317954005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263590806.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 1317954005 is about 36303.6362503813. The cubic root of 1317954005 is about 1096.3942554491.

The spelling of 1317954005 in words is "one billion, three hundred seventeen million, nine hundred fifty-four thousand, five".