11192813 has 4 divisors (see below), whose sum is σ = 11201820. Its totient is φ = 11183808.

The previous prime is 11192809. The next prime is 11192827. The reversal of 11192813 is 31829111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31829111 = 241 ⋅132071.

It can be written as a sum of positive squares in 2 ways, for example, as 6853924 + 4338889 = 2618^2 + 2083^2 .

It is a cyclic number.

It is not a de Polignac number, because 11192813 - 2² = 11192809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11192803) 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, 2270 + ... + 5247.

It is an arithmetic number, because the mean of its divisors is an integer number (2800455).

Almost surely, 2^11192813 is an apocalyptic number.

It is an amenable number.

11192813 is a deficient number, since it is larger than the sum of its proper divisors (9007).

11192813 is an equidigital number, since it uses as much as digits as its factorization.

11192813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006.

The product of its digits is 432, while the sum is 26.

The square root of 11192813 is about 3345.5661703215. The cubic root of 11192813 is about 223.6899209294.

The spelling of 11192813 in words is "eleven million, one hundred ninety-two thousand, eight hundred thirteen".