16994851 has 4 divisors (see below), whose sum is σ = 17543104. Its totient is φ = 16446600.

The previous prime is 16994843. The next prime is 16994863. The reversal of 16994851 is 15849961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15849961 = 257 ⋅61673.

It is a cyclic number.

It is not a de Polignac number, because 16994851 - 2³ = 16994843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16994798 and 16994807.

It is not an unprimeable number, because it can be changed into a prime (16994801) 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, 274080 + ... + 274141.

It is an arithmetic number, because the mean of its divisors is an integer number (4385776).

Almost surely, 2^16994851 is an apocalyptic number.

16994851 is a deficient number, since it is larger than the sum of its proper divisors (548253).

16994851 is an equidigital number, since it uses as much as digits as its factorization.

16994851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548252.

The product of its digits is 77760, while the sum is 43.

The square root of 16994851 is about 4122.4811703633. The cubic root of 16994851 is about 257.1021965838.

The spelling of 16994851 in words is "sixteen million, nine hundred ninety-four thousand, eight hundred fifty-one".