6493475538 has 64 divisors (see below), whose sum is σ = 16076759040. Its totient is φ = 1925845200.

The previous prime is 6493475531. The next prime is 6493475539. The reversal of 6493475538 is 8355743946.

6493475538 is a `hidden beast` number, since 6 + 4 + 9 + 34 + 75 + 538 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6493475531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88378 + ... + 144213.

It is an arithmetic number, because the mean of its divisors is an integer number (251199360).

Almost surely, 2^6493475538 is an apocalyptic number.

6493475538 is an abundant number, since it is smaller than the sum of its proper divisors (9583283502).

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

6493475538 is a wasteful number, since it uses less digits than its factorization.

6493475538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232660 (or 232654 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The square root of 6493475538 is about 80582.1043284426. The cubic root of 6493475538 is about 1865.6309430280.

The spelling of 6493475538 in words is "six billion, four hundred ninety-three million, four hundred seventy-five thousand, five hundred thirty-eight".