8945805845 has 8 divisors (see below), whose sum is σ = 10760468280. Its totient is φ = 7139643840.

The previous prime is 8945805751. The next prime is 8945805857. The reversal of 8945805845 is 5485085498.

It can be written as a sum of positive squares in 4 ways, for example, as 12909649 + 8932896196 = 3593^2 + 94514^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-8945805845 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122790 + ... + 2126999.

It is an arithmetic number, because the mean of its divisors is an integer number (1345058535).

Almost surely, 2^8945805845 is an apocalyptic number.

It is an amenable number.

8945805845 is a deficient number, since it is larger than the sum of its proper divisors (1814662435).

8945805845 is a wasteful number, since it uses less digits than its factorization.

8945805845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250215.

The product of its (nonzero) digits is 9216000, while the sum is 56.

The square root of 8945805845 is about 94582.2702465954. The cubic root of 8945805845 is about 2075.9002892556.

The spelling of 8945805845 in words is "eight billion, nine hundred forty-five million, eight hundred five thousand, eight hundred forty-five".