18944906 has 8 divisors (see below), whose sum is σ = 29334144. Its totient is φ = 9166860.

The previous prime is 18944867. The next prime is 18944909. The reversal of 18944906 is 60944981.

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

It is not an unprimeable number, because it can be changed into a prime (18944909) 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, 152720 + ... + 152843.

It is an arithmetic number, because the mean of its divisors is an integer number (3666768).

Almost surely, 2^18944906 is an apocalyptic number.

18944906 is a deficient number, since it is larger than the sum of its proper divisors (10389238).

18944906 is a wasteful number, since it uses less digits than its factorization.

18944906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305596.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18944906 is about 4352.5746403709. The cubic root of 18944906 is about 266.5819977725.

The spelling of 18944906 in words is "eighteen million, nine hundred forty-four thousand, nine hundred six".