2845667641 has 4 divisors (see below), whose sum is σ = 2850600052. Its totient is φ = 2840735232.

The previous prime is 2845667633. The next prime is 2845667651. The reversal of 2845667641 is 1467665482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1467665482 = 2 ⋅733832741.

It can be written as a sum of positive squares in 2 ways, for example, as 2381049616 + 464618025 = 48796^2 + 21555^2 .

It is a cyclic number.

It is not a de Polignac number, because 2845667641 - 2³ = 2845667633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2845667651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2465340 + ... + 2466493.

It is an arithmetic number, because the mean of its divisors is an integer number (712650013).

Almost surely, 2^2845667641 is an apocalyptic number.

It is an amenable number.

2845667641 is a deficient number, since it is larger than the sum of its proper divisors (4932411).

2845667641 is an equidigital number, since it uses as much as digits as its factorization.

2845667641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932410.

The product of its digits is 1935360, while the sum is 49.

The square root of 2845667641 is about 53344.7995684678. The cubic root of 2845667641 is about 1417.0811631845.

The spelling of 2845667641 in words is "two billion, eight hundred forty-five million, six hundred sixty-seven thousand, six hundred forty-one".