468641861 has 2 divisors, whose sum is σ = 468641862. Its totient is φ = 468641860.

The previous prime is 468641843. The next prime is 468641881. The reversal of 468641861 is 168146864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 452880961 + 15760900 = 21281^2 + 3970^2 .

It is a cyclic number.

It is not a de Polignac number, because 468641861 - 2¹⁴ = 468625477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (468641801) 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, 234320930 + 234320931.

It is an arithmetic number, because the mean of its divisors is an integer number (234320931).

Almost surely, 2^468641861 is an apocalyptic number.

It is an amenable number.

468641861 is a deficient number, since it is larger than the sum of its proper divisors (1).

468641861 is an equidigital number, since it uses as much as digits as its factorization.

468641861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 44.

The square root of 468641861 is about 21648.1375873307. The cubic root of 468641861 is about 776.7483862470.

The spelling of 468641861 in words is "four hundred sixty-eight million, six hundred forty-one thousand, eight hundred sixty-one".