13161789 has 6 divisors (see below), whose sum is σ = 19011486. Its totient is φ = 8774520.

The previous prime is 13161769. The next prime is 13161793. The reversal of 13161789 is 98716131.

13161789 is a `hidden beast` number, since 1 + 31 + 617 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 736164 = 3525^2 + 858^2 .

It is not a de Polignac number, because 13161789 - 2⁹ = 13161277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13161769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 731202 + ... + 731219.

It is an arithmetic number, because the mean of its divisors is an integer number (3168581).

Almost surely, 2^13161789 is an apocalyptic number.

It is an amenable number.

13161789 is a deficient number, since it is larger than the sum of its proper divisors (5849697).

13161789 is a wasteful number, since it uses less digits than its factorization.

13161789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462427 (or 1462424 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 13161789 is about 3627.9179979707. The cubic root of 13161789 is about 236.1048861083.

The spelling of 13161789 in words is "thirteen million, one hundred sixty-one thousand, seven hundred eighty-nine".