12909492198 has 48 divisors (see below), whose sum is σ = 29640854880. Its totient is φ = 4046623488.

The previous prime is 12909492191. The next prime is 12909492241. The reversal of 12909492198 is 89129490921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12909492191) 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 23 ways as a sum of consecutive naturals, for example, 358911 + ... + 393237.

It is an arithmetic number, because the mean of its divisors is an integer number (617517810).

Almost surely, 2^12909492198 is an apocalyptic number.

12909492198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12909492198 is an abundant number, since it is smaller than the sum of its proper divisors (16731362682).

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

12909492198 is a wasteful number, since it uses less digits than its factorization.

12909492198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35581 (or 35578 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The spelling of 12909492198 in words is "twelve billion, nine hundred nine million, four hundred ninety-two thousand, one hundred ninety-eight".