12194994549 has 16 divisors (see below), whose sum is σ = 16454937600. Its totient is φ = 8033096640.

The previous prime is 12194994547. The next prime is 12194994587. The reversal of 12194994549 is 94549949121.

It is not a de Polignac number, because 12194994549 - 2¹ = 12194994547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12194994541) 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 15 ways as a sum of consecutive naturals, for example, 13959 + ... + 156795.

It is an arithmetic number, because the mean of its divisors is an integer number (1028433600).

Almost surely, 2^12194994549 is an apocalyptic number.

It is an amenable number.

12194994549 is a deficient number, since it is larger than the sum of its proper divisors (4259943051).

12194994549 is a wasteful number, since it uses less digits than its factorization.

12194994549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143180.

The product of its digits is 4199040, while the sum is 57.

The spelling of 12194994549 in words is "twelve billion, one hundred ninety-four million, nine hundred ninety-four thousand, five hundred forty-nine".