13118869 has 4 divisors (see below), whose sum is σ = 13126144. Its totient is φ = 13111596.

The previous prime is 13118857. The next prime is 13118881. The reversal of 13118869 is 96881131.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96881131 = 1109 ⋅87359.

It is an interprime number because it is at equal distance from previous prime (13118857) and next prime (13118881).

It is a cyclic number.

It is not a de Polignac number, because 13118869 - 2⁵ = 13118837 is a prime.

It is a super-2 number, since 2×13118869² = 344209447678322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13118069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324 + ... + 5290.

It is an arithmetic number, because the mean of its divisors is an integer number (3281536).

Almost surely, 2^13118869 is an apocalyptic number.

It is an amenable number.

13118869 is a deficient number, since it is larger than the sum of its proper divisors (7275).

13118869 is an equidigital number, since it uses as much as digits as its factorization.

13118869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7274.

The product of its digits is 10368, while the sum is 37.

The square root of 13118869 is about 3621.9979293202. The cubic root of 13118869 is about 235.8479641756.

The spelling of 13118869 in words is "thirteen million, one hundred eighteen thousand, eight hundred sixty-nine".