1318245998719 has 4 divisors (see below), whose sum is σ = 1419649537096. Its totient is φ = 1216842460344.

The previous prime is 1318245998711. The next prime is 1318245998761. The reversal of 1318245998719 is 9178995428131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1318245998719 - 2³ = 1318245998711 is a prime.

It is a super-2 number, since 2×1318245998719² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318245998711) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 50701769169 + ... + 50701769194.

It is an arithmetic number, because the mean of its divisors is an integer number (354912384274).

Almost surely, 2^{1318245998719} is an apocalyptic number.

1318245998719 is a deficient number, since it is larger than the sum of its proper divisors (101403538377).

1318245998719 is a wasteful number, since it uses less digits than its factorization.

1318245998719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101403538376.

The product of its digits is 39191040, while the sum is 67.

The spelling of 1318245998719 in words is "one trillion, three hundred eighteen billion, two hundred forty-five million, nine hundred ninety-eight thousand, seven hundred nineteen".