11180138 has 16 divisors (see below), whose sum is σ = 17680680. Its totient is φ = 5294016.

The previous prime is 11180131. The next prime is 11180173. The reversal of 11180138 is 83108111.

It can be written as a sum of positive squares in 4 ways, for example, as 7856809 + 3323329 = 2803^2 + 1823^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11180131) 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 7 ways as a sum of consecutive naturals, for example, 1256 + ... + 4892.

Almost surely, 2^11180138 is an apocalyptic number.

11180138 is a deficient number, since it is larger than the sum of its proper divisors (6500542).

11180138 is a wasteful number, since it uses less digits than its factorization.

11180138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721.

The product of its (nonzero) digits is 192, while the sum is 23.

The square root of 11180138 is about 3343.6713355233. The cubic root of 11180138 is about 223.6054518252.

Adding to 11180138 its reverse (83108111), we get a palindrome (94288249).

The spelling of 11180138 in words is "eleven million, one hundred eighty thousand, one hundred thirty-eight".