18943108 has 12 divisors (see below), whose sum is σ = 34220032. Its totient is φ = 9165960.

The previous prime is 18943103. The next prime is 18943121. The reversal of 18943108 is 80134981.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18943103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76260 + ... + 76507.

Almost surely, 2^18943108 is an apocalyptic number.

It is an amenable number.

18943108 is a deficient number, since it is larger than the sum of its proper divisors (15276924).

18943108 is a wasteful number, since it uses less digits than its factorization.

18943108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152802 (or 152800 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 18943108 is about 4352.3680910511. The cubic root of 18943108 is about 266.5735640262.

The spelling of 18943108 in words is "eighteen million, nine hundred forty-three thousand, one hundred eight".