6215480809 has 4 divisors (see below), whose sum is σ = 6224662404. Its totient is φ = 6206299216.

The previous prime is 6215480797. The next prime is 6215480833. The reversal of 6215480809 is 9080845126.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9080845126 = 2 ⋅4540422563.

It can be written as a sum of positive squares in 2 ways, for example, as 6092270809 + 123210000 = 78053^2 + 11100^2 .

It is a cyclic number.

It is not a de Polignac number, because 6215480809 - 2⁷ = 6215480681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6215480879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4589782 + ... + 4591135.

It is an arithmetic number, because the mean of its divisors is an integer number (1556165601).

Almost surely, 2^6215480809 is an apocalyptic number.

It is an amenable number.

6215480809 is a deficient number, since it is larger than the sum of its proper divisors (9181595).

6215480809 is an equidigital number, since it uses as much as digits as its factorization.

6215480809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9181594.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 6215480809 is about 78838.3206886093. The cubic root of 6215480809 is about 1838.6182925055.

The spelling of 6215480809 in words is "six billion, two hundred fifteen million, four hundred eighty thousand, eight hundred nine".