1317565880 has 16 divisors (see below), whose sum is σ = 2964523320. Its totient is φ = 527026336.

The previous prime is 1317565771. The next prime is 1317565883. The reversal of 1317565880 is 885657131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317565883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16469534 + ... + 16469613.

Almost surely, 2^1317565880 is an apocalyptic number.

1317565880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1317565880 is an abundant number, since it is smaller than the sum of its proper divisors (1646957440).

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

1317565880 is a wasteful number, since it uses less digits than its factorization.

1317565880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32939158 (or 32939154 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 1317565880 is about 36298.2903178648. The cubic root of 1317565880 is about 1096.2866189666.

The spelling of 1317565880 in words is "one billion, three hundred seventeen million, five hundred sixty-five thousand, eight hundred eighty".