16938818 has 32 divisors (see below), whose sum is σ = 28459200. Its totient is φ = 7511616.

The previous prime is 16938809. The next prime is 16938821. The reversal of 16938818 is 81883961.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121793 + ... + 121931.

It is an arithmetic number, because the mean of its divisors is an integer number (889350).

Almost surely, 2^16938818 is an apocalyptic number.

16938818 is a deficient number, since it is larger than the sum of its proper divisors (11520382).

16938818 is a wasteful number, since it uses less digits than its factorization.

16938818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its digits is 82944, while the sum is 44.

The square root of 16938818 is about 4115.6795307701. The cubic root of 16938818 is about 256.8193252376.

The spelling of 16938818 in words is "sixteen million, nine hundred thirty-eight thousand, eight hundred eighteen".