13161804 has 12 divisors (see below), whose sum is σ = 30710904. Its totient is φ = 4387264.

The previous prime is 13161793. The next prime is 13161809. The reversal of 13161804 is 40816131.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (13161809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548397 + ... + 548420.

It is an arithmetic number, because the mean of its divisors is an integer number (2559242).

Almost surely, 2^13161804 is an apocalyptic number.

It is an amenable number.

13161804 is an abundant number, since it is smaller than the sum of its proper divisors (17549100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13161804 is a wasteful number, since it uses less digits than its factorization.

13161804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096824 (or 1096822 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 13161804 is about 3627.9200652716. The cubic root of 13161804 is about 236.1049758016.

Adding to 13161804 its reverse (40816131), we get a palindrome (53977935).

The spelling of 13161804 in words is "thirteen million, one hundred sixty-one thousand, eight hundred four".