13645129 has 4 divisors (see below), whose sum is σ = 13677076. Its totient is φ = 13613184.

The previous prime is 13645127. The next prime is 13645157. The reversal of 13645129 is 92154631.

13645129 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 490000 + 13155129 = 700^2 + 3627^2 .

It is a cyclic number.

It is not a de Polignac number, because 13645129 - 2¹ = 13645127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13645129.

It is not an unprimeable number, because it can be changed into a prime (13645127) 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, 15324 + ... + 16189.

It is an arithmetic number, because the mean of its divisors is an integer number (3419269).

Almost surely, 2^13645129 is an apocalyptic number.

It is an amenable number.

13645129 is a deficient number, since it is larger than the sum of its proper divisors (31947).

13645129 is an equidigital number, since it uses as much as digits as its factorization.

13645129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31946.

The product of its digits is 6480, while the sum is 31.

The square root of 13645129 is about 3693.9313745656. The cubic root of 13645129 is about 238.9603699397.

The spelling of 13645129 in words is "thirteen million, six hundred forty-five thousand, one hundred twenty-nine".