809603193401 has 2 divisors, whose sum is σ = 809603193402. Its totient is φ = 809603193400.

The previous prime is 809603193367. The next prime is 809603193461. The reversal of 809603193401 is 104391306908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 773914316176 + 35688877225 = 879724^2 + 188915^2 .

It is a cyclic number.

It is not a de Polignac number, because 809603193401 - 2⁶ = 809603193337 is a prime.

It is not a weakly prime, because it can be changed into another prime (809603193461) 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, 404801596700 + 404801596701.

It is an arithmetic number, because the mean of its divisors is an integer number (404801596701).

Almost surely, 2^809603193401 is an apocalyptic number.

It is an amenable number.

809603193401 is a deficient number, since it is larger than the sum of its proper divisors (1).

809603193401 is an equidigital number, since it uses as much as digits as its factorization.

809603193401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 809603193401 in words is "eight hundred nine billion, six hundred three million, one hundred ninety-three thousand, four hundred one".