13450449109 has 4 divisors (see below), whose sum is σ = 13452898816. Its totient is φ = 13447999404.

The previous prime is 13450449101. The next prime is 13450449137. The reversal of 13450449109 is 90194405431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90194405431 = 13 ⋅6938031187.

It is a cyclic number.

It is not a de Polignac number, because 13450449109 - 2³ = 13450449101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13450449101) 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, 1216599 + ... + 1227604.

It is an arithmetic number, because the mean of its divisors is an integer number (3363224704).

Almost surely, 2^13450449109 is an apocalyptic number.

It is an amenable number.

13450449109 is a deficient number, since it is larger than the sum of its proper divisors (2449707).

13450449109 is an equidigital number, since it uses as much as digits as its factorization.

13450449109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449706.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 13450449109 in words is "thirteen billion, four hundred fifty million, four hundred forty-nine thousand, one hundred nine".