12081849 has 16 divisors (see below), whose sum is σ = 18369792. Its totient is φ = 6997248.

The previous prime is 12081841. The next prime is 12081859. The reversal of 12081849 is 94818021.

It is not a de Polignac number, because 12081849 - 2³ = 12081841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12081841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8449 + ... + 9774.

It is an arithmetic number, because the mean of its divisors is an integer number (1148112).

Almost surely, 2^12081849 is an apocalyptic number.

It is an amenable number.

12081849 is a deficient number, since it is larger than the sum of its proper divisors (6287943).

12081849 is a wasteful number, since it uses less digits than its factorization.

12081849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18256.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 12081849 is about 3475.8954242037. The cubic root of 12081849 is about 229.4621901724.

The spelling of 12081849 in words is "twelve million, eighty-one thousand, eight hundred forty-nine".