1318037891793 has 8 divisors (see below), whose sum is σ = 2008438692288. Its totient is φ = 753164509584.

The previous prime is 1318037891777. The next prime is 1318037891803. The reversal of 1318037891793 is 3971987308131.

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

It is not a de Polignac number, because 1318037891793 - 2⁴ = 1318037891777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1318037891743) 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, 31381854546 + ... + 31381854587.

It is an arithmetic number, because the mean of its divisors is an integer number (251054836536).

Almost surely, 2^{1318037891793} is an apocalyptic number.

It is an amenable number.

1318037891793 is a deficient number, since it is larger than the sum of its proper divisors (690400800495).

1318037891793 is an equidigital number, since it uses as much as digits as its factorization.

1318037891793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62763709143.

The product of its (nonzero) digits is 6858432, while the sum is 60.

The spelling of 1318037891793 in words is "one trillion, three hundred eighteen billion, thirty-seven million, eight hundred ninety-one thousand, seven hundred ninety-three".