6454784509 has 4 divisors (see below), whose sum is σ = 6454969920. Its totient is φ = 6454599100.

The previous prime is 6454784477. The next prime is 6454784521. The reversal of 6454784509 is 9054874546.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6454784509 - 2⁵ = 6454784477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6454784909) by changing a digit.

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, 23029 + ... + 115930.

It is an arithmetic number, because the mean of its divisors is an integer number (1613742480).

Almost surely, 2^6454784509 is an apocalyptic number.

It is an amenable number.

6454784509 is a deficient number, since it is larger than the sum of its proper divisors (185411).

6454784509 is a wasteful number, since it uses less digits than its factorization.

6454784509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185410.

The product of its (nonzero) digits is 4838400, while the sum is 52.

The square root of 6454784509 is about 80341.6735511528. The cubic root of 6454784509 is about 1861.9181380995.

The spelling of 6454784509 in words is "six billion, four hundred fifty-four million, seven hundred eighty-four thousand, five hundred nine".