6718135789 has 4 divisors (see below), whose sum is σ = 6771034624. Its totient is φ = 6665236956.

The previous prime is 6718135771. The next prime is 6718135807. The reversal of 6718135789 is 9875318176.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (6718135771) and next prime (6718135807).

It is a cyclic number.

It is not a de Polignac number, because 6718135789 - 2¹⁷ = 6718004717 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 (6718135709) 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, 26449227 + ... + 26449480.

It is an arithmetic number, because the mean of its divisors is an integer number (1692758656).

Almost surely, 2^6718135789 is an apocalyptic number.

It is an amenable number.

6718135789 is a deficient number, since it is larger than the sum of its proper divisors (52898835).

6718135789 is a wasteful number, since it uses less digits than its factorization.

6718135789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52898834.

The product of its digits is 2540160, while the sum is 55.

The square root of 6718135789 is about 81964.2348161684. The cubic root of 6718135789 is about 1886.9030764441.

The spelling of 6718135789 in words is "six billion, seven hundred eighteen million, one hundred thirty-five thousand, seven hundred eighty-nine".