12181893982 has 8 divisors (see below), whose sum is σ = 18862287552. Its totient is φ = 5894464800.

The previous prime is 12181893973. The next prime is 12181893989. The reversal of 12181893982 is 28939818121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12181893989) 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 3 ways as a sum of consecutive naturals, for example, 98241019 + ... + 98241142.

It is an arithmetic number, because the mean of its divisors is an integer number (2357785944).

Almost surely, 2^12181893982 is an apocalyptic number.

12181893982 is a deficient number, since it is larger than the sum of its proper divisors (6680393570).

12181893982 is a wasteful number, since it uses less digits than its factorization.

12181893982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196482194.

The product of its digits is 497664, while the sum is 52.

The spelling of 12181893982 in words is "twelve billion, one hundred eighty-one million, eight hundred ninety-three thousand, nine hundred eighty-two".