448381257819 has 32 divisors (see below), whose sum is σ = 690608830464. Its totient is φ = 255741242880.

The previous prime is 448381257809. The next prime is 448381257827. The reversal of 448381257819 is 918752183844.

It is not a de Polignac number, because 448381257819 - 2⁸ = 448381257563 is a prime.

It is a super-2 number, since 2×448381257819² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (448381257809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10156197 + ... + 10200249.

It is an arithmetic number, because the mean of its divisors is an integer number (21581525952).

Almost surely, 2^448381257819 is an apocalyptic number.

448381257819 is a deficient number, since it is larger than the sum of its proper divisors (242227572645).

448381257819 is a wasteful number, since it uses less digits than its factorization.

448381257819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62227.

The product of its digits is 15482880, while the sum is 60.

The spelling of 448381257819 in words is "four hundred forty-eight billion, three hundred eighty-one million, two hundred fifty-seven thousand, eight hundred nineteen".