11609138 has 8 divisors (see below), whose sum is σ = 17443200. Its totient is φ = 5794740.

The previous prime is 11609137. The next prime is 11609189. The reversal of 11609138 is 83190611.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11609138.

It is not an unprimeable number, because it can be changed into a prime (11609131) 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, 3338 + ... + 5861.

It is an arithmetic number, because the mean of its divisors is an integer number (2180400).

Almost surely, 2^11609138 is an apocalyptic number.

11609138 is a deficient number, since it is larger than the sum of its proper divisors (5834062).

11609138 is an equidigital number, since it uses as much as digits as its factorization.

11609138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9832.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 11609138 is about 3407.2185136853. The cubic root of 11609138 is about 226.4296652933.

Adding to 11609138 its reverse (83190611), we get a palindrome (94799749).

The spelling of 11609138 in words is "eleven million, six hundred nine thousand, one hundred thirty-eight".