6494829138 has 96 divisors (see below), whose sum is σ = 16735320576. Its totient is φ = 1781829504.

The previous prime is 6494829041. The next prime is 6494829161. The reversal of 6494829138 is 8319284946.

6494829138 is a `hidden beast` number, since 6 + 49 + 482 + 91 + 38 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 303520 + ... + 324212.

It is an arithmetic number, because the mean of its divisors is an integer number (174326256).

Almost surely, 2^6494829138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6494829138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8367660288).

6494829138 is an abundant number, since it is smaller than the sum of its proper divisors (10240491438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6494829138 is a wasteful number, since it uses less digits than its factorization.

6494829138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20808 (or 20805 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 6494829138 is about 80590.5027779328. The cubic root of 6494829138 is about 1865.7605676323.

The spelling of 6494829138 in words is "six billion, four hundred ninety-four million, eight hundred twenty-nine thousand, one hundred thirty-eight".