13116819 has 4 divisors (see below), whose sum is σ = 17489096. Its totient is φ = 8744544.

The previous prime is 13116749. The next prime is 13116823. The reversal of 13116819 is 91861131.

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

It is not a de Polignac number, because 13116819 - 2⁸ = 13116563 is a prime.

It is a super-2 number, since 2×13116819² = 344101881357522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13116839) 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, 2186134 + ... + 2186139.

It is an arithmetic number, because the mean of its divisors is an integer number (4372274).

Almost surely, 2^13116819 is an apocalyptic number.

13116819 is a deficient number, since it is larger than the sum of its proper divisors (4372277).

13116819 is an equidigital number, since it uses as much as digits as its factorization.

13116819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372276.

The product of its digits is 1296, while the sum is 30.

The square root of 13116819 is about 3621.7149252806. The cubic root of 13116819 is about 235.8356787285.

The spelling of 13116819 in words is "thirteen million, one hundred sixteen thousand, eight hundred nineteen".