6450309445 has 4 divisors (see below), whose sum is σ = 7740371340. Its totient is φ = 5160247552.

The previous prime is 6450309433. The next prime is 6450309511. The reversal of 6450309445 is 5449030546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5449030546 = 2 ⋅2724515273.

It can be written as a sum of positive squares in 2 ways, for example, as 2692987236 + 3757322209 = 51894^2 + 61297^2 .

It is a cyclic number.

It is not a de Polignac number, because 6450309445 - 2³¹ = 4302825797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6450309398 and 6450309407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645030940 + ... + 645030949.

It is an arithmetic number, because the mean of its divisors is an integer number (1935092835).

Almost surely, 2^6450309445 is an apocalyptic number.

It is an amenable number.

6450309445 is a deficient number, since it is larger than the sum of its proper divisors (1290061895).

6450309445 is a wasteful number, since it uses less digits than its factorization.

6450309445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290061894.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 6450309445 is about 80313.8185183596. The cubic root of 6450309445 is about 1861.4877530047.

The spelling of 6450309445 in words is "six billion, four hundred fifty million, three hundred nine thousand, four hundred forty-five".