204161473 has 2 divisors, whose sum is σ = 204161474. Its totient is φ = 204161472.

The previous prime is 204161453. The next prime is 204161539. The reversal of 204161473 is 374161402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158558464 + 45603009 = 12592^2 + 6753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204161473 is a prime.

It is not a weakly prime, because it can be changed into another prime (204161453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102080736 + 102080737.

It is an arithmetic number, because the mean of its divisors is an integer number (102080737).

Almost surely, 2^204161473 is an apocalyptic number.

It is an amenable number.

204161473 is a deficient number, since it is larger than the sum of its proper divisors (1).

204161473 is an equidigital number, since it uses as much as digits as its factorization.

204161473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 204161473 is about 14288.5084246047. The cubic root of 204161473 is about 588.8318099510.

The spelling of 204161473 in words is "two hundred four million, one hundred sixty-one thousand, four hundred seventy-three".