6493405047 has 4 divisors (see below), whose sum is σ = 8657873400. Its totient is φ = 4328936696.

The previous prime is 6493405027. The next prime is 6493405063. The reversal of 6493405047 is 7405043946.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6493405047 - 2⁸ = 6493404791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6493405027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082234172 + ... + 1082234177.

It is an arithmetic number, because the mean of its divisors is an integer number (2164468350).

Almost surely, 2^6493405047 is an apocalyptic number.

6493405047 is a deficient number, since it is larger than the sum of its proper divisors (2164468353).

6493405047 is a wasteful number, since it uses less digits than its factorization.

6493405047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164468352.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 6493405047 is about 80581.6669410605. Note that the first 3 decimals coincide. The cubic root of 6493405047 is about 1865.6241921149.

The spelling of 6493405047 in words is "six billion, four hundred ninety-three million, four hundred five thousand, forty-seven".