11081861 has 8 divisors (see below), whose sum is σ = 12739584. Its totient is φ = 9442800.

The previous prime is 11081843. The next prime is 11081879. The reversal of 11081861 is 16818011.

It is an interprime number because it is at equal distance from previous prime (11081843) and next prime (11081879).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11081861 - 2¹⁰ = 11080837 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 11081861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11081891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3365 + ... + 5786.

It is an arithmetic number, because the mean of its divisors is an integer number (1592448).

Almost surely, 2^11081861 is an apocalyptic number.

It is an amenable number.

11081861 is a deficient number, since it is larger than the sum of its proper divisors (1657723).

11081861 is an equidigital number, since it uses as much as digits as its factorization.

11081861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9331.

The product of its (nonzero) digits is 384, while the sum is 26.

The square root of 11081861 is about 3328.9429253143. The cubic root of 11081861 is about 222.9483347368.

Adding to 11081861 its reverse (16818011), we get a palindrome (27899872).

The spelling of 11081861 in words is "eleven million, eighty-one thousand, eight hundred sixty-one".