16801849 has 2 divisors, whose sum is σ = 16801850. Its totient is φ = 16801848.

The previous prime is 16801819. The next prime is 16801853. The reversal of 16801849 is 94810861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16321600 + 480249 = 4040^2 + 693^2 .

It is an emirp because it is prime and its reverse (94810861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16801849 - 2¹¹ = 16799801 is a prime.

It is not a weakly prime, because it can be changed into another prime (16801819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8400924 + 8400925.

It is an arithmetic number, because the mean of its divisors is an integer number (8400925).

Almost surely, 2^16801849 is an apocalyptic number.

It is an amenable number.

16801849 is a deficient number, since it is larger than the sum of its proper divisors (1).

16801849 is an equidigital number, since it uses as much as digits as its factorization.

16801849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 16801849 is about 4099.0058550824. The cubic root of 16801849 is about 256.1252286484.

The spelling of 16801849 in words is "sixteen million, eight hundred one thousand, eight hundred forty-nine".