461878211 has 2 divisors, whose sum is σ = 461878212. Its totient is φ = 461878210.

The previous prime is 461878181. The next prime is 461878213. The reversal of 461878211 is 112878164.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 461878211 - 2⁶ = 461878147 is a prime.

It is a Sophie Germain prime.

Together with 461878213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (461878213) 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, 230939105 + 230939106.

It is an arithmetic number, because the mean of its divisors is an integer number (230939106).

Almost surely, 2^461878211 is an apocalyptic number.

461878211 is a deficient number, since it is larger than the sum of its proper divisors (1).

461878211 is an equidigital number, since it uses as much as digits as its factorization.

461878211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 38.

The square root of 461878211 is about 21491.3520049344. The cubic root of 461878211 is about 772.9934697178.

The spelling of 461878211 in words is "four hundred sixty-one million, eight hundred seventy-eight thousand, two hundred eleven".