1316761517 has 8 divisors (see below), whose sum is σ = 1348567416. Its totient is φ = 1285327872.

The previous prime is 1316761507. The next prime is 1316761553. The reversal of 1316761517 is 7151676131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 626701156 + 690060361 = 25034^2 + 26269^2 .

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 1316761517 - 2⁸ = 1316761261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316761507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85898 + ... + 100059.

It is an arithmetic number, because the mean of its divisors is an integer number (168570927).

Almost surely, 2^1316761517 is an apocalyptic number.

It is an amenable number.

1316761517 is a deficient number, since it is larger than the sum of its proper divisors (31805899).

1316761517 is an equidigital number, since it uses as much as digits as its factorization.

1316761517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186127.

The product of its digits is 26460, while the sum is 38.

The square root of 1316761517 is about 36287.2087242874. The cubic root of 1316761517 is about 1096.0634822683.

The spelling of 1316761517 in words is "one billion, three hundred sixteen million, seven hundred sixty-one thousand, five hundred seventeen".