1317148956 has 36 divisors (see below), whose sum is σ = 3436864704. Its totient is φ = 424886400.

The previous prime is 1317148939. The next prime is 1317148969. The reversal of 1317148956 is 6598417131.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589005 + ... + 591236.

It is an arithmetic number, because the mean of its divisors is an integer number (95468464).

Almost surely, 2^1317148956 is an apocalyptic number.

It is an amenable number.

1317148956 is an abundant number, since it is smaller than the sum of its proper divisors (2119715748).

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

1317148956 is a wasteful number, since it uses less digits than its factorization.

1317148956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180282 (or 1180277 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 1317148956 is about 36292.5468381595. The cubic root of 1317148956 is about 1096.1709722708.

The spelling of 1317148956 in words is "one billion, three hundred seventeen million, one hundred forty-eight thousand, nine hundred fifty-six".