1317916941 has 16 divisors (see below), whose sum is σ = 1928059200. Its totient is φ = 794117120.

The previous prime is 1317916939. The next prime is 1317916979. The reversal of 1317916941 is 1496197131.

It is a cyclic number.

It is not a de Polignac number, because 1317916941 - 2¹ = 1317916939 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1317916893 and 1317916902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317916141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109716 + ... + 121133.

It is an arithmetic number, because the mean of its divisors is an integer number (120503700).

Almost surely, 2^1317916941 is an apocalyptic number.

1317916941 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1317916941 is a deficient number, since it is larger than the sum of its proper divisors (610142259).

1317916941 is a wasteful number, since it uses less digits than its factorization.

1317916941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231036.

The product of its digits is 40824, while the sum is 42.

The square root of 1317916941 is about 36303.1257745115. The cubic root of 1317916941 is about 1096.3839776151.

The spelling of 1317916941 in words is "one billion, three hundred seventeen million, nine hundred sixteen thousand, nine hundred forty-one".