1804314642209 has 2 divisors, whose sum is σ = 1804314642210. Its totient is φ = 1804314642208.

The previous prime is 1804314642103. The next prime is 1804314642217. The reversal of 1804314642209 is 9022464134081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1775449651600 + 28864990609 = 1332460^2 + 169897^2 .

It is a cyclic number.

It is not a de Polignac number, because 1804314642209 - 2²⁰ = 1804313593633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1804314642209.

It is not a weakly prime, because it can be changed into another prime (1804314642289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902157321104 + 902157321105.

It is an arithmetic number, because the mean of its divisors is an integer number (902157321105).

Almost surely, 2^{1804314642209} is an apocalyptic number.

It is an amenable number.

1804314642209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1804314642209 is an equidigital number, since it uses as much as digits as its factorization.

1804314642209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 1804314642209 in words is "one trillion, eight hundred four billion, three hundred fourteen million, six hundred forty-two thousand, two hundred nine".