1318440017 has 4 divisors (see below), whose sum is σ = 1375763520. Its totient is φ = 1261116516.

The previous prime is 1318439987. The next prime is 1318440023. The reversal of 1318440017 is 7100448131.

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.

It is a cyclic number.

It is not a de Polignac number, because 1318440017 - 2⁶ = 1318439953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318440047) 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, 28661717 + ... + 28661762.

It is an arithmetic number, because the mean of its divisors is an integer number (343940880).

Almost surely, 2^1318440017 is an apocalyptic number.

It is an amenable number.

1318440017 is a deficient number, since it is larger than the sum of its proper divisors (57323503).

1318440017 is an equidigital number, since it uses as much as digits as its factorization.

1318440017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57323502.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1318440017 is about 36310.3293430396. The cubic root of 1318440017 is about 1096.5290085782.

Adding to 1318440017 its reverse (7100448131), we get a palindrome (8418888148).

The spelling of 1318440017 in words is "one billion, three hundred eighteen million, four hundred forty thousand, seventeen".