461891473 has 2 divisors, whose sum is σ = 461891474. Its totient is φ = 461891472.

The previous prime is 461891407. The next prime is 461891503. The reversal of 461891473 is 374198164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391129729 + 70761744 = 19777^2 + 8412^2 .

It is a cyclic number.

It is not a de Polignac number, because 461891473 - 2¹³ = 461883281 is a prime.

It is not a weakly prime, because it can be changed into another prime (461894473) 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, 230945736 + 230945737.

It is an arithmetic number, because the mean of its divisors is an integer number (230945737).

Almost surely, 2^461891473 is an apocalyptic number.

It is an amenable number.

461891473 is a deficient number, since it is larger than the sum of its proper divisors (1).

461891473 is an equidigital number, since it uses as much as digits as its factorization.

461891473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 461891473 is about 21491.6605454302. The cubic root of 461891473 is about 773.0008680183. Note that the first 3 decimals are identical.

The spelling of 461891473 in words is "four hundred sixty-one million, eight hundred ninety-one thousand, four hundred seventy-three".