6448345818 has 32 divisors (see below), whose sum is σ = 13592197440. Its totient is φ = 2033809920.

The previous prime is 6448345817. The next prime is 6448345831. The reversal of 6448345818 is 8185438446.

It is not an unprimeable number, because it can be changed into a prime (6448345817) 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, 59146 + ... + 128042.

It is an arithmetic number, because the mean of its divisors is an integer number (424756170).

Almost surely, 2^6448345818 is an apocalyptic number.

6448345818 is an abundant number, since it is smaller than the sum of its proper divisors (7143851622).

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

6448345818 is a wasteful number, since it uses less digits than its factorization.

6448345818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69742.

The product of its digits is 2949120, while the sum is 51.

The square root of 6448345818 is about 80301.5928733671. The cubic root of 6448345818 is about 1861.2988401769.

The spelling of 6448345818 in words is "six billion, four hundred forty-eight million, three hundred forty-five thousand, eight hundred eighteen".