13532181943 has 4 divisors (see below), whose sum is σ = 15465350800. Its totient is φ = 11599013088.

The previous prime is 13532181913. The next prime is 13532181947. The reversal of 13532181943 is 34918123531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13532181943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13532181896 and 13532181905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13532181947) 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, 966584418 + ... + 966584431.

It is an arithmetic number, because the mean of its divisors is an integer number (3866337700).

Almost surely, 2^13532181943 is an apocalyptic number.

13532181943 is a deficient number, since it is larger than the sum of its proper divisors (1933168857).

13532181943 is an equidigital number, since it uses as much as digits as its factorization.

13532181943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933168856.

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

The spelling of 13532181943 in words is "thirteen billion, five hundred thirty-two million, one hundred eighty-one thousand, nine hundred forty-three".