13168189439 has 4 divisors (see below), whose sum is σ = 13168909656. Its totient is φ = 13167469224.

The previous prime is 13168189417. The next prime is 13168189451. The reversal of 13168189439 is 93498186131.

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-13168189439 is a prime.

It is a super-2 number, since 2×13168189439² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13168189469) 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, 331949 + ... + 369494.

It is an arithmetic number, because the mean of its divisors is an integer number (3292227414).

Almost surely, 2^13168189439 is an apocalyptic number.

13168189439 is a deficient number, since it is larger than the sum of its proper divisors (720217).

13168189439 is an equidigital number, since it uses as much as digits as its factorization.

13168189439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720216.

The product of its digits is 1119744, while the sum is 53.

The spelling of 13168189439 in words is "thirteen billion, one hundred sixty-eight million, one hundred eighty-nine thousand, four hundred thirty-nine".