6494577518 has 64 divisors (see below), whose sum is σ = 11650867200. Its totient is φ = 2676360960.

The previous prime is 6494577517. The next prime is 6494577569. The reversal of 6494577518 is 8157754946.

It is a happy number.

It is a super-2 number, since 2×6494577518² = 84359074274622080648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6494577517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5037818 + ... + 5039106.

It is an arithmetic number, because the mean of its divisors is an integer number (182044800).

Almost surely, 2^6494577518 is an apocalyptic number.

6494577518 is a deficient number, since it is larger than the sum of its proper divisors (5156289682).

6494577518 is a wasteful number, since it uses less digits than its factorization.

6494577518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617.

The product of its digits is 8467200, while the sum is 56.

The square root of 6494577518 is about 80588.9416607514. The cubic root of 6494577518 is about 1865.7364731449.

The spelling of 6494577518 in words is "six billion, four hundred ninety-four million, five hundred seventy-seven thousand, five hundred eighteen".