1318711988187 has 24 divisors (see below), whose sum is σ = 2078010237888. Its totient is φ = 799204066800.

The previous prime is 1318711988149. The next prime is 1318711988197. The reversal of 1318711988187 is 7818891178131.

It is not a de Polignac number, because 1318711988187 - 2²³ = 1318703599579 is a prime.

It is a super-2 number, since 2×1318711988187² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1318711988197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7144888 + ... + 7327130.

It is an arithmetic number, because the mean of its divisors is an integer number (86583759912).

Almost surely, 2^{1318711988187} is an apocalyptic number.

1318711988187 is a deficient number, since it is larger than the sum of its proper divisors (759298249701).

1318711988187 is a wasteful number, since it uses less digits than its factorization.

1318711988187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255351 (or 255348 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 63.

The spelling of 1318711988187 in words is "one trillion, three hundred eighteen billion, seven hundred eleven million, nine hundred eighty-eight thousand, one hundred eighty-seven".