1317887841 has 8 divisors (see below), whose sum is σ = 1813867264. Its totient is φ = 850250160.

The previous prime is 1317887839. The next prime is 1317887873. The reversal of 1317887841 is 1487887131.

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

It is not a de Polignac number, because 1317887841 - 2¹ = 1317887839 is a prime.

It is a super-2 number, since 2×1317887841² = 3473656722911282562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1317887801) by changing a digit.

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, 7085326 + ... + 7085511.

It is an arithmetic number, because the mean of its divisors is an integer number (226733408).

Almost surely, 2^1317887841 is an apocalyptic number.

It is an amenable number.

1317887841 is a deficient number, since it is larger than the sum of its proper divisors (495979423).

1317887841 is a wasteful number, since it uses less digits than its factorization.

1317887841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14170871.

The product of its digits is 301056, while the sum is 48.

The square root of 1317887841 is about 36302.7249803648. The cubic root of 1317887841 is about 1096.3759080604.

The spelling of 1317887841 in words is "one billion, three hundred seventeen million, eight hundred eighty-seven thousand, eight hundred forty-one".