1804420173317 has 2 divisors, whose sum is σ = 1804420173318. Its totient is φ = 1804420173316.

The previous prime is 1804420173313. The next prime is 1804420173383. The reversal of 1804420173317 is 7133710244081.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1657331815876 + 147088357441 = 1287374^2 + 383521^2 .

It is a cyclic number.

It is not a de Polignac number, because 1804420173317 - 2² = 1804420173313 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1804420173313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902210086658 + 902210086659.

It is an arithmetic number, because the mean of its divisors is an integer number (902210086659).

Almost surely, 2^{1804420173317} is an apocalyptic number.

It is an amenable number.

1804420173317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1804420173317 is an equidigital number, since it uses as much as digits as its factorization.

1804420173317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 1804420173317 in words is "one trillion, eight hundred four billion, four hundred twenty million, one hundred seventy-three thousand, three hundred seventeen".