12513809 has 8 divisors (see below), whose sum is σ = 15601728. Its totient is φ = 9750960.

The previous prime is 12513793. The next prime is 12513847. The reversal of 12513809 is 90831521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12513809 - 2⁴ = 12513793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12513859) 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 7 ways as a sum of consecutive naturals, for example, 81182 + ... + 81335.

It is an arithmetic number, because the mean of its divisors is an integer number (1950216).

Almost surely, 2^12513809 is an apocalyptic number.

It is an amenable number.

12513809 is a deficient number, since it is larger than the sum of its proper divisors (3087919).

12513809 is a wasteful number, since it uses less digits than its factorization.

12513809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162535.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 12513809 is about 3537.4862543903. The cubic root of 12513809 is about 232.1648711634.

The spelling of 12513809 in words is "twelve million, five hundred thirteen thousand, eight hundred nine".