2855163845 has 4 divisors (see below), whose sum is σ = 3426196620. Its totient is φ = 2284131072.

The previous prime is 2855163797. The next prime is 2855163847. The reversal of 2855163845 is 5483615582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 922154689 + 1933009156 = 30367^2 + 43966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2855163845 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2855163845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2855163847) 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, 285516380 + ... + 285516389.

It is an arithmetic number, because the mean of its divisors is an integer number (856549155).

Almost surely, 2^2855163845 is an apocalyptic number.

It is an amenable number.

2855163845 is a deficient number, since it is larger than the sum of its proper divisors (571032775).

2855163845 is an equidigital number, since it uses as much as digits as its factorization.

2855163845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571032774.

The product of its digits is 1152000, while the sum is 47.

The square root of 2855163845 is about 53433.7332122696. The cubic root of 2855163845 is about 1418.6557146681.

The spelling of 2855163845 in words is "two billion, eight hundred fifty-five million, one hundred sixty-three thousand, eight hundred forty-five".