6408539613 has 48 divisors (see below), whose sum is σ = 10986917760. Its totient is φ = 3656710656.

The previous prime is 6408539597. The next prime is 6408539639. The reversal of 6408539613 is 3169358046.

It is not a de Polignac number, because 6408539613 - 2⁴ = 6408539597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6408519613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1373781 + ... + 1378437.

It is an arithmetic number, because the mean of its divisors is an integer number (228894120).

Almost surely, 2^6408539613 is an apocalyptic number.

6408539613 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6408539613 is a deficient number, since it is larger than the sum of its proper divisors (4578378147).

6408539613 is an equidigital number, since it uses as much as digits as its factorization.

6408539613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488 (or 5476 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 6408539613 is about 80053.3547891655. The cubic root of 6408539613 is about 1857.4609450248.

The spelling of 6408539613 in words is "six billion, four hundred eight million, five hundred thirty-nine thousand, six hundred thirteen".