1115189918508 has 96 divisors (see below), whose sum is σ = 2731915210752. Its totient is φ = 353387232000.

The previous prime is 1115189918489. The next prime is 1115189918527. The reversal of 1115189918508 is 8058199815111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1115189918489) and next prime (1115189918527).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 94960485 + ... + 94972227.

It is an arithmetic number, because the mean of its divisors is an integer number (28457450112).

Almost surely, 2^{1115189918508} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115189918508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1365957605376).

1115189918508 is an abundant number, since it is smaller than the sum of its proper divisors (1616725292244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1115189918508 is a wasteful number, since it uses less digits than its factorization.

1115189918508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13855 (or 13853 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 57.

The spelling of 1115189918508 in words is "one trillion, one hundred fifteen billion, one hundred eighty-nine million, nine hundred eighteen thousand, five hundred eight".