11836013 has 16 divisors (see below), whose sum is σ = 14034816. Its totient is φ = 9771840.

The previous prime is 11836009. The next prime is 11836043. The reversal of 11836013 is 31063811.

It is a cyclic number.

It is not a de Polignac number, because 11836013 - 2² = 11836009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11836013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11836043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22370 + ... + 22892.

It is an arithmetic number, because the mean of its divisors is an integer number (877176).

Almost surely, 2^11836013 is an apocalyptic number.

It is an amenable number.

11836013 is a deficient number, since it is larger than the sum of its proper divisors (2198803).

11836013 is an equidigital number, since it uses as much as digits as its factorization.

11836013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 11836013 is about 3440.3507088668. The cubic root of 11836013 is about 227.8951824037.

Adding to 11836013 its reverse (31063811), we get a palindrome (42899824).

The spelling of 11836013 in words is "eleven million, eight hundred thirty-six thousand, thirteen".