819049243 has 2 divisors, whose sum is σ = 819049244. Its totient is φ = 819049242.

The previous prime is 819049237. The next prime is 819049249. The reversal of 819049243 is 342940918.

819049243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (819049237) and next prime (819049249).

It is a cyclic number.

It is not a de Polignac number, because 819049243 - 2²¹ = 816952091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 819049196 and 819049205.

It is not a weakly prime, because it can be changed into another prime (819049249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409524621 + 409524622.

It is an arithmetic number, because the mean of its divisors is an integer number (409524622).

Almost surely, 2^819049243 is an apocalyptic number.

819049243 is a deficient number, since it is larger than the sum of its proper divisors (1).

819049243 is an equidigital number, since it uses as much as digits as its factorization.

819049243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 819049243 is about 28619.0363744134. The cubic root of 819049243 is about 935.6282747716.

The spelling of 819049243 in words is "eight hundred nineteen million, forty-nine thousand, two hundred forty-three".