18710994 has 8 divisors (see below), whose sum is σ = 37422000. Its totient is φ = 6236996.

The previous prime is 18710981. The next prime is 18711001. The reversal of 18710994 is 49901781.

It is a happy number.

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

18710994 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1559244 + ... + 1559255.

It is an arithmetic number, because the mean of its divisors is an integer number (4677750).

Almost surely, 2^18710994 is an apocalyptic number.

18710994 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.

18710994 is a wasteful number, since it uses less digits than its factorization.

18710994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118504.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 18710994 is about 4325.6206491092. The cubic root of 18710994 is about 265.4802919110.

The spelling of 18710994 in words is "eighteen million, seven hundred ten thousand, nine hundred ninety-four".