13808137 has 4 divisors (see below), whose sum is σ = 15780736. Its totient is φ = 11835540.

The previous prime is 13808101. The next prime is 13808153. The reversal of 13808137 is 73180831.

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: 73180831 = 107 ⋅683933.

It is a cyclic number.

It is not a de Polignac number, because 13808137 - 2¹⁵ = 13775369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13808099 and 13808108.

It is not an unprimeable number, because it can be changed into a prime (13808167) 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, 986289 + ... + 986302.

It is an arithmetic number, because the mean of its divisors is an integer number (3945184).

Almost surely, 2^13808137 is an apocalyptic number.

It is an amenable number.

13808137 is a deficient number, since it is larger than the sum of its proper divisors (1972599).

13808137 is an equidigital number, since it uses as much as digits as its factorization.

13808137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972598.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 13808137 is about 3715.9301661899. The cubic root of 13808137 is about 239.9081650958.

Adding to 13808137 its reverse (73180831), we get a palindrome (86988968).

The spelling of 13808137 in words is "thirteen million, eight hundred eight thousand, one hundred thirty-seven".