6348278791 has 4 divisors (see below), whose sum is σ = 6356534800. Its totient is φ = 6340022784.

The previous prime is 6348278773. The next prime is 6348278801. The reversal of 6348278791 is 1978728436.

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 6348278791 - 2⁵ = 6348278759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6348278711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4126851 + ... + 4128388.

It is an arithmetic number, because the mean of its divisors is an integer number (1589133700).

Almost surely, 2^6348278791 is an apocalyptic number.

6348278791 is a deficient number, since it is larger than the sum of its proper divisors (8256009).

6348278791 is an equidigital number, since it uses as much as digits as its factorization.

6348278791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8256008.

The product of its digits is 4064256, while the sum is 55.

The square root of 6348278791 is about 79676.0866948170. The cubic root of 6348278791 is about 1851.6205708359.

The spelling of 6348278791 in words is "six billion, three hundred forty-eight million, two hundred seventy-eight thousand, seven hundred ninety-one".