13808537 has 4 divisors (see below), whose sum is σ = 14042640. Its totient is φ = 13574436.

The previous prime is 13808527. The next prime is 13808549. The reversal of 13808537 is 73580831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73580831 = 103 ⋅714377.

It is a cyclic number.

It is not a de Polignac number, because 13808537 - 2⁸ = 13808281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13808497 and 13808506.

It is not an unprimeable number, because it can be changed into a prime (13808507) 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 3 ways as a sum of consecutive naturals, for example, 116963 + ... + 117080.

It is an arithmetic number, because the mean of its divisors is an integer number (3510660).

Almost surely, 2^13808537 is an apocalyptic number.

It is an amenable number.

13808537 is a deficient number, since it is larger than the sum of its proper divisors (234103).

13808537 is an equidigital number, since it uses as much as digits as its factorization.

13808537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234102.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 13808537 is about 3715.9839881248. The cubic root of 13808537 is about 239.9104816607.

The spelling of 13808537 in words is "thirteen million, eight hundred eight thousand, five hundred thirty-seven".