11838161 has 4 divisors (see below), whose sum is σ = 11887524. Its totient is φ = 11788800.

The previous prime is 11838131. The next prime is 11838179. The reversal of 11838161 is 16183811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4330561 + 7507600 = 2081^2 + 2740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11838161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11838131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24320 + ... + 24801.

It is an arithmetic number, because the mean of its divisors is an integer number (2971881).

Almost surely, 2^11838161 is an apocalyptic number.

It is an amenable number.

11838161 is a deficient number, since it is larger than the sum of its proper divisors (49363).

11838161 is an equidigital number, since it uses as much as digits as its factorization.

11838161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49362.

The product of its digits is 1152, while the sum is 29.

The square root of 11838161 is about 3440.6628721803. The cubic root of 11838161 is about 227.9089677114.

The spelling of 11838161 in words is "eleven million, eight hundred thirty-eight thousand, one hundred sixty-one".