4678691641 has 8 divisors (see below), whose sum is σ = 5095205640. Its totient is φ = 4270265472.

The previous prime is 4678691609. The next prime is 4678691687. The reversal of 4678691641 is 1461968764.

It can be written as a sum of positive squares in 4 ways, for example, as 212576400 + 4466115241 = 14580^2 + 66829^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4678691641 - 2⁵ = 4678691609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4678691041) 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 7 ways as a sum of consecutive naturals, for example, 2020750 + ... + 2023063.

It is an arithmetic number, because the mean of its divisors is an integer number (636900705).

Almost surely, 2^4678691641 is an apocalyptic number.

It is an amenable number.

4678691641 is a deficient number, since it is larger than the sum of its proper divisors (416513999).

4678691641 is a wasteful number, since it uses less digits than its factorization.

4678691641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043915.

The product of its digits is 1741824, while the sum is 52.

The square root of 4678691641 is about 68400.9622812428. The cubic root of 4678691641 is about 1672.5334324354.

The spelling of 4678691641 in words is "four billion, six hundred seventy-eight million, six hundred ninety-one thousand, six hundred forty-one".