449364649638 has 32 divisors (see below), whose sum is σ = 919488245760. Its totient is φ = 146367486720.

The previous prime is 449364649633. The next prime is 449364649639. The reversal of 449364649638 is 836946463944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449364649633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4840758 + ... + 4932713.

It is an arithmetic number, because the mean of its divisors is an integer number (28734007680).

Almost surely, 2^449364649638 is an apocalyptic number.

449364649638 is an abundant number, since it is smaller than the sum of its proper divisors (470123596122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449364649638 is a wasteful number, since it uses less digits than its factorization.

449364649638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9773652.

The product of its digits is 322486272, while the sum is 66.

The spelling of 449364649638 in words is "four hundred forty-nine billion, three hundred sixty-four million, six hundred forty-nine thousand, six hundred thirty-eight".