18944066 has 8 divisors (see below), whose sum is σ = 28462224. Its totient is φ = 9456660.

The previous prime is 18944063. The next prime is 18944117. The reversal of 18944066 is 66044981.

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

It is a super-2 number, since 2×18944066² = 717755273224712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18944063) 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, 6080 + ... + 8651.

It is an arithmetic number, because the mean of its divisors is an integer number (3557778).

Almost surely, 2^18944066 is an apocalyptic number.

18944066 is a deficient number, since it is larger than the sum of its proper divisors (9518158).

18944066 is a wasteful number, since it uses less digits than its factorization.

18944066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15376.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 18944066 is about 4352.4781446895. The cubic root of 18944066 is about 266.5780577127.

The spelling of 18944066 in words is "eighteen million, nine hundred forty-four thousand, sixty-six".