6450370009 has 4 divisors (see below), whose sum is σ = 6538731316. Its totient is φ = 6362008704.

The previous prime is 6450370007. The next prime is 6450370013. The reversal of 6450370009 is 9000730546.

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 1342123225 + 5108246784 = 36635^2 + 71472^2 .

It is a cyclic number.

It is not a de Polignac number, because 6450370009 - 2¹ = 6450370007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6450370001) 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, 44180544 + ... + 44180689.

It is an arithmetic number, because the mean of its divisors is an integer number (1634682829).

Almost surely, 2^6450370009 is an apocalyptic number.

It is an amenable number.

6450370009 is a deficient number, since it is larger than the sum of its proper divisors (88361307).

6450370009 is an equidigital number, since it uses as much as digits as its factorization.

6450370009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88361306.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 6450370009 is about 80314.1955634245. The cubic root of 6450370009 is about 1861.4935790193.

The spelling of 6450370009 in words is "six billion, four hundred fifty million, three hundred seventy thousand, nine".