449364649637 has 4 divisors (see below), whose sum is σ = 450005684076. Its totient is φ = 448723615200.

The previous prime is 449364649633. The next prime is 449364649639. The reversal of 449364649637 is 736946463944.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 427191652801 + 22172996836 = 653599^2 + 148906^2 .

It is a cyclic number.

It is not a de Polignac number, because 449364649637 - 2² = 449364649633 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 320516168 + ... + 320517569.

It is an arithmetic number, because the mean of its divisors is an integer number (112501421019).

Almost surely, 2^449364649637 is an apocalyptic number.

It is an amenable number.

449364649637 is a deficient number, since it is larger than the sum of its proper divisors (641034439).

449364649637 is an equidigital number, since it uses as much as digits as its factorization.

449364649637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641034438.

The product of its digits is 282175488, while the sum is 65.

The spelling of 449364649637 in words is "four hundred forty-nine billion, three hundred sixty-four million, six hundred forty-nine thousand, six hundred thirty-seven".