1318478713 has 4 divisors (see below), whose sum is σ = 1328543568. Its totient is φ = 1308413860.

The previous prime is 1318478677. The next prime is 1318478747. The reversal of 1318478713 is 3178748131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3178748131 = 13 ⋅244519087.

It is a cyclic number.

It is not a de Polignac number, because 1318478713 - 2⁹ = 1318478201 is a prime.

It is a super-2 number, since 2×1318478713² = 3476772233268272738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1318478713.

It is not an unprimeable number, because it can be changed into a prime (1318478773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5032231 + ... + 5032492.

It is an arithmetic number, because the mean of its divisors is an integer number (332135892).

Almost surely, 2^1318478713 is an apocalyptic number.

It is an amenable number.

1318478713 is a deficient number, since it is larger than the sum of its proper divisors (10064855).

1318478713 is a wasteful number, since it uses less digits than its factorization.

1318478713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10064854.

The product of its digits is 112896, while the sum is 43.

The square root of 1318478713 is about 36310.8621902593. The cubic root of 1318478713 is about 1096.5397361226.

The spelling of 1318478713 in words is "one billion, three hundred eighteen million, four hundred seventy-eight thousand, seven hundred thirteen".