1181910930012 has 36 divisors (see below), whose sum is σ = 2987670656880. Its totient is φ = 393962071872.

The previous prime is 1181910929987. The next prime is 1181910930017. The reversal of 1181910930012 is 2100390191811.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181910930017) 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 11 ways as a sum of consecutive naturals, for example, 1544488 + ... + 2179280.

It is an arithmetic number, because the mean of its divisors is an integer number (82990851580).

Almost surely, 2^{1181910930012} is an apocalyptic number.

1181910930012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1181910930012 is an abundant number, since it is smaller than the sum of its proper divisors (1805759726868).

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

1181910930012 is a wasteful number, since it uses less digits than its factorization.

1181910930012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686522 (or 686517 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 36.

The spelling of 1181910930012 in words is "one trillion, one hundred eighty-one billion, nine hundred ten million, nine hundred thirty thousand, twelve".