11671818 has 8 divisors (see below), whose sum is σ = 23343648. Its totient is φ = 3890604.

The previous prime is 11671817. The next prime is 11671837. The reversal of 11671818 is 81817611.

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

11671818 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11671817) 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, 972646 + ... + 972657.

It is an arithmetic number, because the mean of its divisors is an integer number (2917956).

Almost surely, 2^11671818 is an apocalyptic number.

11671818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11671818 is a wasteful number, since it uses less digits than its factorization.

11671818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945308.

The product of its digits is 2688, while the sum is 33.

The square root of 11671818 is about 3416.4042500852. The cubic root of 11671818 is about 226.8364467118.

The spelling of 11671818 in words is "eleven million, six hundred seventy-one thousand, eight hundred eighteen".