2011826 has 4 divisors (see below), whose sum is σ = 3017742. Its totient is φ = 1005912.

The previous prime is 2011811. The next prime is 2011843. The reversal of 2011826 is 6281102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6281102 = 2 ⋅3140551.

It can be written as a sum of positive squares in only one way, i.e., 1692601 + 319225 = 1301^2 + 565^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2011798 and 2011807.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502955 + ... + 502958.

2^2011826 is an apocalyptic number.

2011826 is a deficient number, since it is larger than the sum of its proper divisors (1005916).

2011826 is a wasteful number, since it uses less digits than its factorization.

2011826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005915.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2011826 is about 1418.3885222322. The cubic root of 2011826 is about 126.2399475707.

Adding to 2011826 its reverse (6281102), we get a palindrome (8292928).

The spelling of 2011826 in words is "two million, eleven thousand, eight hundred twenty-six".