1317324645 has 192 divisors, whose sum is σ = 3019161600. Its totient is φ = 515579904.

The previous prime is 1317324641. The next prime is 1317324661. The reversal of 1317324645 is 5464237131.

1317324645 is a `hidden beast` number, since 1 + 3 + 1 + 7 + 3 + 2 + 4 + 645 = 666.

It is not a de Polignac number, because 1317324645 - 2² = 1317324641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317324641) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8841031 + ... + 8841179.

It is an arithmetic number, because the mean of its divisors is an integer number (15724800).

Almost surely, 2^1317324645 is an apocalyptic number.

1317324645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1317324645 is an abundant number, since it is smaller than the sum of its proper divisors (1701836955).

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

1317324645 is a wasteful number, since it uses less digits than its factorization.

1317324645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 321 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 1317324645 is about 36294.9672130999. The cubic root of 1317324645 is about 1096.2197079938.

The spelling of 1317324645 in words is "one billion, three hundred seventeen million, three hundred twenty-four thousand, six hundred forty-five".