809749340683 has 2 divisors, whose sum is σ = 809749340684. Its totient is φ = 809749340682.

The previous prime is 809749340641. The next prime is 809749340713. The reversal of 809749340683 is 386043947908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 809749340683 - 2²¹ = 809747243531 is a prime.

It is a super-3 number, since 3×809749340683³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (809749340083) 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, 404874670341 + 404874670342.

It is an arithmetic number, because the mean of its divisors is an integer number (404874670342).

Almost surely, 2^809749340683 is an apocalyptic number.

809749340683 is a deficient number, since it is larger than the sum of its proper divisors (1).

809749340683 is an equidigital number, since it uses as much as digits as its factorization.

809749340683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 809749340683 in words is "eight hundred nine billion, seven hundred forty-nine million, three hundred forty thousand, six hundred eighty-three".