6494748639 has 8 divisors (see below), whose sum is σ = 8893710000. Its totient is φ = 4212809856.

The previous prime is 6494748619. The next prime is 6494748647. The reversal of 6494748639 is 9368474946.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-6494748639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6494748619) 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 7 ways as a sum of consecutive naturals, for example, 29255514 + ... + 29255735.

It is an arithmetic number, because the mean of its divisors is an integer number (1111713750).

Almost surely, 2^6494748639 is an apocalyptic number.

6494748639 is a deficient number, since it is larger than the sum of its proper divisors (2398961361).

6494748639 is a wasteful number, since it uses less digits than its factorization.

6494748639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58511289.

The product of its digits is 31352832, while the sum is 60.

The square root of 6494748639 is about 80590.0033440873. The cubic root of 6494748639 is about 1865.7528593217.

The spelling of 6494748639 in words is "six billion, four hundred ninety-four million, seven hundred forty-eight thousand, six hundred thirty-nine".