16859138 has 16 divisors (see below), whose sum is σ = 27941760. Its totient is φ = 7588416.

The previous prime is 16859113. The next prime is 16859149. The reversal of 16859138 is 83195861.

It is a junction number, because it is equal to n+sod(n) for n = 16859095 and 16859104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9998 + ... + 11561.

It is an arithmetic number, because the mean of its divisors is an integer number (1746360).

Almost surely, 2^16859138 is an apocalyptic number.

16859138 is a deficient number, since it is larger than the sum of its proper divisors (11082622).

16859138 is a wasteful number, since it uses less digits than its factorization.

16859138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21601.

The product of its digits is 51840, while the sum is 41.

The square root of 16859138 is about 4105.9880662272. The cubic root of 16859138 is about 256.4160004715.

The spelling of 16859138 in words is "sixteen million, eight hundred fifty-nine thousand, one hundred thirty-eight".