1313908907865 has 32 divisors (see below), whose sum is σ = 2193842727936. Its totient is φ = 670227096000.

The previous prime is 1313908907813. The next prime is 1313908907933. The reversal of 1313908907865 is 5687098093131.

It is not a de Polignac number, because 1313908907865 - 2¹¹ = 1313908905817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1313908907799 and 1313908907808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4071162 + ... + 4382028.

It is an arithmetic number, because the mean of its divisors is an integer number (68557585248).

Almost surely, 2^{1313908907865} is an apocalyptic number.

1313908907865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1313908907865 is a deficient number, since it is larger than the sum of its proper divisors (879933820071).

1313908907865 is a wasteful number, since it uses less digits than its factorization.

1313908907865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323149.

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 1313908907865 in words is "one trillion, three hundred thirteen billion, nine hundred eight million, nine hundred seven thousand, eight hundred sixty-five".