448810781 has 2 divisors, whose sum is σ = 448810782. Its totient is φ = 448810780.

The previous prime is 448810759. The next prime is 448810783. The reversal of 448810781 is 187018844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318051556 + 130759225 = 17834^2 + 11435^2 .

It is a cyclic number.

It is not a de Polignac number, because 448810781 - 2⁶ = 448810717 is a prime.

It is a super-2 number, since 2×448810781² = 402862234283659922, which contains 22 as substring.

Together with 448810783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448810783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224405390 + 224405391.

It is an arithmetic number, because the mean of its divisors is an integer number (224405391).

Almost surely, 2^448810781 is an apocalyptic number.

It is an amenable number.

448810781 is a deficient number, since it is larger than the sum of its proper divisors (1).

448810781 is an equidigital number, since it uses as much as digits as its factorization.

448810781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57344, while the sum is 41.

The square root of 448810781 is about 21185.1547315567. The cubic root of 448810781 is about 765.6337926209.

The spelling of 448810781 in words is "four hundred forty-eight million, eight hundred ten thousand, seven hundred eighty-one".