804619783309 has 2 divisors, whose sum is σ = 804619783310. Its totient is φ = 804619783308.

The previous prime is 804619783291. The next prime is 804619783321. The reversal of 804619783309 is 903387916408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 628933060809 + 175686722500 = 793053^2 + 419150^2 .

It is a cyclic number.

It is not a de Polignac number, because 804619783309 - 2⁹ = 804619782797 is a prime.

It is a super-2 number, since 2×804619783309² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804619783339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402309891654 + 402309891655.

It is an arithmetic number, because the mean of its divisors is an integer number (402309891655).

Almost surely, 2^804619783309 is an apocalyptic number.

It is an amenable number.

804619783309 is a deficient number, since it is larger than the sum of its proper divisors (1).

804619783309 is an equidigital number, since it uses as much as digits as its factorization.

804619783309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 804619783309 in words is "eight hundred four billion, six hundred nineteen million, seven hundred eighty-three thousand, three hundred nine".