4809678691 has 4 divisors (see below), whose sum is σ = 4809817584. Its totient is φ = 4809539800.

The previous prime is 4809678667. The next prime is 4809678701. The reversal of 4809678691 is 1968769084.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4809678691 - 2²⁷ = 4675460963 is a prime.

It is a super-4 number, since 4×4809678691⁴ (a number of 40 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4809678631) 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, 29301 + ... + 102361.

It is an arithmetic number, because the mean of its divisors is an integer number (1202454396).

Almost surely, 2^4809678691 is an apocalyptic number.

4809678691 is a deficient number, since it is larger than the sum of its proper divisors (138893).

4809678691 is an equidigital number, since it uses as much as digits as its factorization.

4809678691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138892.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The square root of 4809678691 is about 69351.8470626414. The cubic root of 4809678691 is about 1687.9983644173.

The spelling of 4809678691 in words is "four billion, eight hundred nine million, six hundred seventy-eight thousand, six hundred ninety-one".