11681994 has 8 divisors (see below), whose sum is σ = 23364000. Its totient is φ = 3893996.

The previous prime is 11681981. The next prime is 11682023. The reversal of 11681994 is 49918611.

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

11681994 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973494 + ... + 973505.

It is an arithmetic number, because the mean of its divisors is an integer number (2920500).

Almost surely, 2^11681994 is an apocalyptic number.

11681994 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.

11681994 is a wasteful number, since it uses less digits than its factorization.

11681994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947004.

The product of its digits is 15552, while the sum is 39.

The square root of 11681994 is about 3417.8932107367. The cubic root of 11681994 is about 226.9023495325.

The spelling of 11681994 in words is "eleven million, six hundred eighty-one thousand, nine hundred ninety-four".