11689418 has 16 divisors (see below), whose sum is σ = 19493376. Its totient is φ = 5220720.

The previous prime is 11689409. The next prime is 11689439. The reversal of 11689418 is 81498611.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6446 + ... + 8057.

It is an arithmetic number, because the mean of its divisors is an integer number (1218336).

Almost surely, 2^11689418 is an apocalyptic number.

11689418 is a deficient number, since it is larger than the sum of its proper divisors (7803958).

11689418 is a wasteful number, since it uses less digits than its factorization.

11689418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14549.

The product of its digits is 13824, while the sum is 38.

The square root of 11689418 is about 3418.9790873885. The cubic root of 11689418 is about 226.9504054359.

The spelling of 11689418 in words is "eleven million, six hundred eighty-nine thousand, four hundred eighteen".