1317184872 has 32 divisors (see below), whose sum is σ = 3406514400. Its totient is φ = 423921344.

The previous prime is 1317184849. The next prime is 1317184877. The reversal of 1317184872 is 2784817131.

It is not an unprimeable number, because it can be changed into a prime (1317184877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945558 + ... + 946949.

It is an arithmetic number, because the mean of its divisors is an integer number (106453575).

Almost surely, 2^1317184872 is an apocalyptic number.

1317184872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1317184872 is an abundant number, since it is smaller than the sum of its proper divisors (2089329528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1317184872 is a wasteful number, since it uses less digits than its factorization.

1317184872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892545 (or 1892541 counting only the distinct ones).

The product of its digits is 75264, while the sum is 42.

The square root of 1317184872 is about 36293.0416471257. The cubic root of 1317184872 is about 1096.1809356387.

The spelling of 1317184872 in words is "one billion, three hundred seventeen million, one hundred eighty-four thousand, eight hundred seventy-two".