448781865 has 32 divisors (see below), whose sum is σ = 856313856. Its totient is φ = 196236480.

The previous prime is 448781821. The next prime is 448781867. The reversal of 448781865 is 568187844.

It is not a de Polignac number, because 448781865 - 2¹¹ = 448779817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (448781867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90501 + ... + 95330.

It is an arithmetic number, because the mean of its divisors is an integer number (26759808).

Almost surely, 2^448781865 is an apocalyptic number.

It is an amenable number.

448781865 is a deficient number, since it is larger than the sum of its proper divisors (407531991).

448781865 is a wasteful number, since it uses less digits than its factorization.

448781865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185869.

The product of its digits is 1720320, while the sum is 51.

The square root of 448781865 is about 21184.4722615410. The cubic root of 448781865 is about 765.6173495057.

The spelling of 448781865 in words is "four hundred forty-eight million, seven hundred eighty-one thousand, eight hundred sixty-five".