1317626465 has 8 divisors (see below), whose sum is σ = 1581622440. Its totient is φ = 1053787392.

The previous prime is 1317626437. The next prime is 1317626477. The reversal of 1317626465 is 5646267131.

It can be written as a sum of positive squares in 4 ways, for example, as 850072336 + 467554129 = 29156^2 + 21623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1317626465 - 2¹⁶ = 1317560929 is a prime.

It is a super-2 number, since 2×1317626465² = 3472279002536792450, which contains 22 as substring.

It is an unprimeable number.

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, 19880 + ... + 55049.

It is an arithmetic number, because the mean of its divisors is an integer number (197702805).

Almost surely, 2^1317626465 is an apocalyptic number.

It is an amenable number.

1317626465 is a deficient number, since it is larger than the sum of its proper divisors (263995975).

1317626465 is an equidigital number, since it uses as much as digits as its factorization.

1317626465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78451.

The product of its digits is 181440, while the sum is 41.

The square root of 1317626465 is about 36299.1248517096. The cubic root of 1317626465 is about 1096.3034220497.

The spelling of 1317626465 in words is "one billion, three hundred seventeen million, six hundred twenty-six thousand, four hundred sixty-five".