13826381893 has 4 divisors (see below), whose sum is σ = 13917947488. Its totient is φ = 13734816300.

The previous prime is 13826381879. The next prime is 13826381917. The reversal of 13826381893 is 39818362831.

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-13826381893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13826381893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13826381813) 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, 45782571 + ... + 45782872.

It is an arithmetic number, because the mean of its divisors is an integer number (3479486872).

Almost surely, 2^13826381893 is an apocalyptic number.

It is an amenable number.

13826381893 is a deficient number, since it is larger than the sum of its proper divisors (91565595).

13826381893 is an equidigital number, since it uses as much as digits as its factorization.

13826381893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91565594.

The product of its digits is 1492992, while the sum is 52.

The spelling of 13826381893 in words is "thirteen billion, eight hundred twenty-six million, three hundred eighty-one thousand, eight hundred ninety-three".