2016881849 has 2 divisors, whose sum is σ = 2016881850. Its totient is φ = 2016881848.

The previous prime is 2016881843. The next prime is 2016881851. The reversal of 2016881849 is 9481886102.

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., 1715616400 + 301265449 = 41420^2 + 17357^2 .

It is a cyclic number.

It is not a de Polignac number, because 2016881849 - 2⁴ = 2016881833 is a prime.

Together with 2016881851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2016881843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1008440924 + 1008440925.

It is an arithmetic number, because the mean of its divisors is an integer number (1008440925).

Almost surely, 2^2016881849 is an apocalyptic number.

It is an amenable number.

2016881849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2016881849 is an equidigital number, since it uses as much as digits as its factorization.

2016881849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 47.

The square root of 2016881849 is about 44909.7077367466. The cubic root of 2016881849 is about 1263.4560882954.

The spelling of 2016881849 in words is "two billion, sixteen million, eight hundred eighty-one thousand, eight hundred forty-nine".