12169513 has 2 divisors, whose sum is σ = 12169514. Its totient is φ = 12169512.

The previous prime is 12169511. The next prime is 12169567. The reversal of 12169513 is 31596121.

12169513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7469289 + 4700224 = 2733^2 + 2168^2 .

It is an emirp because it is prime and its reverse (31596121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12169513 - 2¹ = 12169511 is a prime.

Together with 12169511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12169511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6084756 + 6084757.

It is an arithmetic number, because the mean of its divisors is an integer number (6084757).

Almost surely, 2^12169513 is an apocalyptic number.

It is an amenable number.

12169513 is a deficient number, since it is larger than the sum of its proper divisors (1).

12169513 is an equidigital number, since it uses as much as digits as its factorization.

12169513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 28.

The square root of 12169513 is about 3488.4829080848. The cubic root of 12169513 is about 230.0158338186.

The spelling of 12169513 in words is "twelve million, one hundred sixty-nine thousand, five hundred thirteen".