1849516813 has 2 divisors, whose sum is σ = 1849516814. Its totient is φ = 1849516812.

The previous prime is 1849516811. The next prime is 1849516849. The reversal of 1849516813 is 3186159481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1475558569 + 373958244 = 38413^2 + 19338^2 .

It is a cyclic number.

It is not a de Polignac number, because 1849516813 - 2¹ = 1849516811 is a prime.

Together with 1849516811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1849516811) 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, 924758406 + 924758407.

It is an arithmetic number, because the mean of its divisors is an integer number (924758407).

Almost surely, 2^1849516813 is an apocalyptic number.

It is an amenable number.

1849516813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1849516813 is an equidigital number, since it uses as much as digits as its factorization.

1849516813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 46.

The square root of 1849516813 is about 43006.0090336223. The cubic root of 1849516813 is about 1227.4941410560.

The spelling of 1849516813 in words is "one billion, eight hundred forty-nine million, five hundred sixteen thousand, eight hundred thirteen".