6410449872 has 60 divisors (see below), whose sum is σ = 17945859204. Its totient is φ = 2136161280.

The previous prime is 6410449867. The next prime is 6410449873. The reversal of 6410449872 is 2789440146.

It can be written as a sum of positive squares in 2 ways, for example, as 3511273536 + 2899176336 = 59256^2 + 53844^2 .

It is a super-2 number, since 2×6410449872² = 82187735122849632768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6410449873) 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 11 ways as a sum of consecutive naturals, for example, 770728 + ... + 779000.

Almost surely, 2^6410449872 is an apocalyptic number.

It is an amenable number.

6410449872 is an abundant number, since it is smaller than the sum of its proper divisors (11535409332).

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

6410449872 is a wasteful number, since it uses less digits than its factorization.

6410449872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13668 (or 13659 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 6410449872 is about 80065.2850616296. The cubic root of 6410449872 is about 1857.6454841558.

The spelling of 6410449872 in words is "six billion, four hundred ten million, four hundred forty-nine thousand, eight hundred seventy-two".