6395688049 has 4 divisors (see below), whose sum is σ = 6398060400. Its totient is φ = 6393315700.

The previous prime is 6395688041. The next prime is 6395688073. The reversal of 6395688049 is 9408865936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6395688049 - 2³ = 6395688041 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6395687984 and 6395688002.

It is not an unprimeable number, because it can be changed into a prime (6395688041) 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, 1182127 + ... + 1187524.

It is an arithmetic number, because the mean of its divisors is an integer number (1599515100).

Almost surely, 2^6395688049 is an apocalyptic number.

It is an amenable number.

6395688049 is a deficient number, since it is larger than the sum of its proper divisors (2372351).

6395688049 is a wasteful number, since it uses less digits than its factorization.

6395688049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372350.

The product of its (nonzero) digits is 11197440, while the sum is 58.

The square root of 6395688049 is about 79973.0457654327. The cubic root of 6395688049 is about 1856.2184751092.

The spelling of 6395688049 in words is "six billion, three hundred ninety-five million, six hundred eighty-eight thousand, forty-nine".