11849819 has 4 divisors (see below), whose sum is σ = 11920944. Its totient is φ = 11778696.

The previous prime is 11849813. The next prime is 11849869. The reversal of 11849819 is 91894811.

11849819 is digitally balanced in base 2, 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, and also an emirpimes, since its reverse is a distinct semiprime: 91894811 = 19 ⋅4836569.

It is a cyclic number.

It is not a de Polignac number, because 11849819 - 2¹² = 11845723 is a prime.

It is a super-2 number, since 2×11849819² = 280836420665522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11849813) 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, 35312 + ... + 35645.

It is an arithmetic number, because the mean of its divisors is an integer number (2980236).

Almost surely, 2^11849819 is an apocalyptic number.

11849819 is a deficient number, since it is larger than the sum of its proper divisors (71125).

11849819 is an equidigital number, since it uses as much as digits as its factorization.

11849819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71124.

The product of its digits is 20736, while the sum is 41.

The square root of 11849819 is about 3442.3566055829. The cubic root of 11849819 is about 227.9837566657.

The spelling of 11849819 in words is "eleven million, eight hundred forty-nine thousand, eight hundred nineteen".