6449240358 has 128 divisors (see below), whose sum is σ = 15911562240. Its totient is φ = 1920015360.

The previous prime is 6449240333. The next prime is 6449240359. The reversal of 6449240358 is 8530429446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6449240359) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9967591 + ... + 9968237.

It is an arithmetic number, because the mean of its divisors is an integer number (124309080).

Almost surely, 2^6449240358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6449240358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7955781120).

6449240358 is an abundant number, since it is smaller than the sum of its proper divisors (9462321882).

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

6449240358 is a wasteful number, since it uses less digits than its factorization.

6449240358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 6449240358 is about 80307.1625572713. The cubic root of 6449240358 is about 1861.3849051061.

The spelling of 6449240358 in words is "six billion, four hundred forty-nine million, two hundred forty thousand, three hundred fifty-eight".