13189833409 has 3 divisors (see below), whose sum is σ = 13189948257. Its totient is φ = 13189718562.

The previous prime is 13189833403. The next prime is 13189833439. The reversal of 13189833409 is 90433898131.

The square root of 13189833409 is 114847.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90433898131 = 19 ⋅4759678849.

It is not a de Polignac number, because 13189833409 - 2⁹ = 13189832897 is a prime.

It is a super-2 number, since 2×13189833409² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13189833403) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 57424 + ... + 172270.

It is an arithmetic number, because the mean of its divisors is an integer number (4396649419).

Almost surely, 2^13189833409 is an apocalyptic number.

13189833409 is the 114847-th square number.

13189833409 is the 57424-th centered octagonal number.

It is an amenable number.

13189833409 is a deficient number, since it is larger than the sum of its proper divisors (114848).

13189833409 is an frugal number, since it uses more digits than its factorization.

13189833409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229694 (or 114847 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

Multiplying 13189833409 by its sum of digits (49), we get a square (646301837041 = 803929²).

The spelling of 13189833409 in words is "thirteen billion, one hundred eighty-nine million, eight hundred thirty-three thousand, four hundred nine".