11143819 has 4 divisors (see below), whose sum is σ = 11284960. Its totient is φ = 11002680.

The previous prime is 11143817. The next prime is 11143871. The reversal of 11143819 is 91834111.

11143819 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11143819 - 2¹ = 11143817 is a prime.

It is a super-2 number, since 2×11143819² = 248369403809522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11143817) 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, 70452 + ... + 70609.

It is an arithmetic number, because the mean of its divisors is an integer number (2821240).

Almost surely, 2^11143819 is an apocalyptic number.

11143819 is a deficient number, since it is larger than the sum of its proper divisors (141141).

11143819 is an equidigital number, since it uses as much as digits as its factorization.

11143819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141140.

The product of its digits is 864, while the sum is 28.

The square root of 11143819 is about 3338.2359113759. The cubic root of 11143819 is about 223.3630595812.

The spelling of 11143819 in words is "eleven million, one hundred forty-three thousand, eight hundred nineteen".