6494748638 has 16 divisors (see below), whose sum is σ = 11392782720. Its totient is φ = 2718731736.

The previous prime is 6494748619. The next prime is 6494748647. The reversal of 6494748638 is 8368474946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5393708 + ... + 5394911.

It is an arithmetic number, because the mean of its divisors is an integer number (712048920).

Almost surely, 2^6494748638 is an apocalyptic number.

6494748638 is a deficient number, since it is larger than the sum of its proper divisors (4898034082).

6494748638 is a wasteful number, since it uses less digits than its factorization.

6494748638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10788671.

The product of its digits is 27869184, while the sum is 59.

The square root of 6494748638 is about 80590.0033378830. The cubic root of 6494748638 is about 1865.7528592260.

The spelling of 6494748638 in words is "six billion, four hundred ninety-four million, seven hundred forty-eight thousand, six hundred thirty-eight".