16858043 has 2 divisors, whose sum is σ = 16858044. Its totient is φ = 16858042.

The previous prime is 16858031. The next prime is 16858063. The reversal of 16858043 is 34085861.

It is a weak prime.

It is an emirp because it is prime and its reverse (34085861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16858043 - 2⁶ = 16857979 is a prime.

It is a super-2 number, since 2×16858043² = 568387227579698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16857994 and 16858012.

It is not a weakly prime, because it can be changed into another prime (16858003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8429021 + 8429022.

It is an arithmetic number, because the mean of its divisors is an integer number (8429022).

Almost surely, 2^16858043 is an apocalyptic number.

16858043 is a deficient number, since it is larger than the sum of its proper divisors (1).

16858043 is an equidigital number, since it uses as much as digits as its factorization.

16858043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 16858043 is about 4105.8547222229. The cubic root of 16858043 is about 256.4104489500.

The spelling of 16858043 in words is "sixteen million, eight hundred fifty-eight thousand, forty-three".