13493741785 has 4 divisors (see below), whose sum is σ = 16192490148. Its totient is φ = 10794993424.

The previous prime is 13493741749. The next prime is 13493741801. The reversal of 13493741785 is 58714739431.

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: 58714739431 = 71 ⋅826968161.

It can be written as a sum of positive squares in 2 ways, for example, as 10256017984 + 3237723801 = 101272^2 + 56901^2 .

It is a cyclic number.

It is not a de Polignac number, because 13493741785 - 2²⁹ = 12956870873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1349374174 + ... + 1349374183.

It is an arithmetic number, because the mean of its divisors is an integer number (4048122537).

Almost surely, 2^13493741785 is an apocalyptic number.

It is an amenable number.

13493741785 is a deficient number, since it is larger than the sum of its proper divisors (2698748363).

13493741785 is an equidigital number, since it uses as much as digits as its factorization.

13493741785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698748362.

The product of its digits is 2540160, while the sum is 52.

The spelling of 13493741785 in words is "thirteen billion, four hundred ninety-three million, seven hundred forty-one thousand, seven hundred eighty-five".