1001191940118 has 24 divisors (see below), whose sum is σ = 2169610558128. Its totient is φ = 333675053712.

The previous prime is 1001191940071. The next prime is 1001191940137. The reversal of 1001191940118 is 8110491911001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4521621 + ... + 4737872.

It is an arithmetic number, because the mean of its divisors is an integer number (90400439922).

Almost surely, 2^{1001191940118} is an apocalyptic number.

1001191940118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1001191940118 is an abundant number, since it is smaller than the sum of its proper divisors (1168418618010).

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

1001191940118 is a wasteful number, since it uses less digits than its factorization.

1001191940118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9265508 (or 9265505 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 36.

The spelling of 1001191940118 in words is "one trillion, one billion, one hundred ninety-one million, nine hundred forty thousand, one hundred eighteen".