819683093 has 2 divisors, whose sum is σ = 819683094. Its totient is φ = 819683092.

The previous prime is 819683087. The next prime is 819683141. The reversal of 819683093 is 390386918.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 733434724 + 86248369 = 27082^2 + 9287^2 .

It is a cyclic number.

It is not a de Polignac number, because 819683093 - 2¹⁸ = 819420949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (819683003) 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, 409841546 + 409841547.

It is an arithmetic number, because the mean of its divisors is an integer number (409841547).

Almost surely, 2^819683093 is an apocalyptic number.

It is an amenable number.

819683093 is a deficient number, since it is larger than the sum of its proper divisors (1).

819683093 is an equidigital number, since it uses as much as digits as its factorization.

819683093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 819683093 is about 28630.1081555764. The cubic root of 819683093 is about 935.8695687960.

The spelling of 819683093 in words is "eight hundred nineteen million, six hundred eighty-three thousand, ninety-three".