11783819 has 4 divisors (see below), whose sum is σ = 12404040. Its totient is φ = 11163600.

The previous prime is 11783809. The next prime is 11783833. The reversal of 11783819 is 91838711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91838711 = 701 ⋅131011.

It is a cyclic number.

It is not a de Polignac number, because 11783819 - 2¹² = 11779723 is a prime.

It is a super-2 number, since 2×11783819² = 277716780449522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11783809) 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, 310082 + ... + 310119.

It is an arithmetic number, because the mean of its divisors is an integer number (3101010).

Almost surely, 2^11783819 is an apocalyptic number.

11783819 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11783819 is a deficient number, since it is larger than the sum of its proper divisors (620221).

11783819 is an equidigital number, since it uses as much as digits as its factorization.

11783819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620220.

The product of its digits is 12096, while the sum is 38.

The square root of 11783819 is about 3432.7567638853. The cubic root of 11783819 is about 227.5597009522.

The spelling of 11783819 in words is "eleven million, seven hundred eighty-three thousand, eight hundred nineteen".