6450198005 has 4 divisors (see below), whose sum is σ = 7740237612. Its totient is φ = 5160158400.

The previous prime is 6450197981. The next prime is 6450198017. The reversal of 6450198005 is 5008910546.

6450198005 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 817845604 + 5632352401 = 28598^2 + 75049^2 .

It is not a de Polignac number, because 6450198005 - 2²⁰ = 6449149429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6450198005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645019796 + ... + 645019805.

It is an arithmetic number, because the mean of its divisors is an integer number (1935059403).

Almost surely, 2^6450198005 is an apocalyptic number.

It is an amenable number.

6450198005 is a deficient number, since it is larger than the sum of its proper divisors (1290039607).

6450198005 is a wasteful number, since it uses less digits than its factorization.

6450198005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290039606.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 6450198005 is about 80313.1247368698. The cubic root of 6450198005 is about 1861.4770328270.

The spelling of 6450198005 in words is "six billion, four hundred fifty million, one hundred ninety-eight thousand, five".