6853826405 has 4 divisors (see below), whose sum is σ = 8224591692. Its totient is φ = 5483061120.

The previous prime is 6853826401. The next prime is 6853826423. The reversal of 6853826405 is 5046283586.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4025394916 + 2828431489 = 63446^2 + 53183^2 .

It is not a de Polignac number, because 6853826405 - 2² = 6853826401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6853826405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6853826401) 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, 685382636 + ... + 685382645.

It is an arithmetic number, because the mean of its divisors is an integer number (2056147923).

Almost surely, 2^6853826405 is an apocalyptic number.

It is an amenable number.

6853826405 is a deficient number, since it is larger than the sum of its proper divisors (1370765287).

6853826405 is a wasteful number, since it uses less digits than its factorization.

6853826405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370765286.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The square root of 6853826405 is about 82787.8397169536. The cubic root of 6853826405 is about 1899.5221702380.

The spelling of 6853826405 in words is "six billion, eight hundred fifty-three million, eight hundred twenty-six thousand, four hundred five".