449605881818 has 8 divisors (see below), whose sum is σ = 674454798048. Its totient is φ = 224787615804.

The previous prime is 449605881817. The next prime is 449605881841. The reversal of 449605881818 is 818188506944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (449605881817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7625846 + ... + 7684577.

It is an arithmetic number, because the mean of its divisors is an integer number (84306849756).

Almost surely, 2^449605881818 is an apocalyptic number.

449605881818 is a deficient number, since it is larger than the sum of its proper divisors (224848916230).

449605881818 is a wasteful number, since it uses less digits than its factorization.

449605881818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15325108.

The product of its (nonzero) digits is 17694720, while the sum is 62.

The spelling of 449605881818 in words is "four hundred forty-nine billion, six hundred five million, eight hundred eighty-one thousand, eight hundred eighteen".