6845809742 has 8 divisors (see below), whose sum is σ = 10269249336. Its totient is φ = 3422726632.

The previous prime is 6845809741. The next prime is 6845809753. The reversal of 6845809742 is 2479085486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6845809742² = 93730222047324213128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6845809741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34388 + ... + 121959.

It is an arithmetic number, because the mean of its divisors is an integer number (1283656167).

Almost surely, 2^6845809742 is an apocalyptic number.

6845809742 is a deficient number, since it is larger than the sum of its proper divisors (3423439594).

6845809742 is a wasteful number, since it uses less digits than its factorization.

6845809742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178242.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The square root of 6845809742 is about 82739.4086394144. The cubic root of 6845809742 is about 1898.7812814167.

The spelling of 6845809742 in words is "six billion, eight hundred forty-five million, eight hundred nine thousand, seven hundred forty-two".