16993118 has 8 divisors (see below), whose sum is σ = 25516848. Its totient is φ = 8487504.

The previous prime is 16993111. The next prime is 16993133. The reversal of 16993118 is 81139961.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16993111) 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, 1871 + ... + 6122.

It is an arithmetic number, because the mean of its divisors is an integer number (3189606).

Almost surely, 2^16993118 is an apocalyptic number.

16993118 is a deficient number, since it is larger than the sum of its proper divisors (8523730).

16993118 is a wasteful number, since it uses less digits than its factorization.

16993118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9058.

The product of its digits is 11664, while the sum is 38.

The square root of 16993118 is about 4122.2709760519. The cubic root of 16993118 is about 257.0934572064.

The spelling of 16993118 in words is "sixteen million, nine hundred ninety-three thousand, one hundred eighteen".