13049731803 has 4 divisors (see below), whose sum is σ = 17399642408. Its totient is φ = 8699821200.

The previous prime is 13049731741. The next prime is 13049731831. The reversal of 13049731803 is 30813794031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30813794031 = 3 ⋅10271264677.

It is not a de Polignac number, because 13049731803 - 2⁹ = 13049731291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13049731853) 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, 2174955298 + ... + 2174955303.

It is an arithmetic number, because the mean of its divisors is an integer number (4349910602).

Almost surely, 2^13049731803 is an apocalyptic number.

13049731803 is a deficient number, since it is larger than the sum of its proper divisors (4349910605).

13049731803 is an equidigital number, since it uses as much as digits as its factorization.

13049731803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349910604.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 13049731803 in words is "thirteen billion, forty-nine million, seven hundred thirty-one thousand, eight hundred three".