12990449183 has 4 divisors (see below), whose sum is σ = 13173413328. Its totient is φ = 12807485040.

The previous prime is 12990449179. The next prime is 12990449201. The reversal of 12990449183 is 38194409921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38194409921 = 193 ⋅197898497.

It is a cyclic number.

It is not a de Polignac number, because 12990449183 - 2² = 12990449179 is a prime.

It is a super-2 number, since 2×12990449183² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12990449113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91481966 + ... + 91482107.

It is an arithmetic number, because the mean of its divisors is an integer number (3293353332).

Almost surely, 2^12990449183 is an apocalyptic number.

12990449183 is a deficient number, since it is larger than the sum of its proper divisors (182964145).

12990449183 is an equidigital number, since it uses as much as digits as its factorization.

12990449183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182964144.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 12990449183 in words is "twelve billion, nine hundred ninety million, four hundred forty-nine thousand, one hundred eighty-three".