13148933449 has 4 divisors (see below), whose sum is σ = 13163242240. Its totient is φ = 13134624660.

The previous prime is 13148933437. The next prime is 13148933467. The reversal of 13148933449 is 94433984131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13148933449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13148939449) 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, 7153017 + ... + 7154854.

It is an arithmetic number, because the mean of its divisors is an integer number (3290810560).

Almost surely, 2^13148933449 is an apocalyptic number.

It is an amenable number.

13148933449 is a deficient number, since it is larger than the sum of its proper divisors (14308791).

13148933449 is an equidigital number, since it uses as much as digits as its factorization.

13148933449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14308790.

The product of its digits is 1119744, while the sum is 49.

The spelling of 13148933449 in words is "thirteen billion, one hundred forty-eight million, nine hundred thirty-three thousand, four hundred forty-nine".