2945168885 has 4 divisors (see below), whose sum is σ = 3534202668. Its totient is φ = 2356135104.

The previous prime is 2945168881. The next prime is 2945168899. The reversal of 2945168885 is 5888615492.

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 540051121 + 2405117764 = 23239^2 + 49042^2 .

It is a cyclic number.

It is not a de Polignac number, because 2945168885 - 2² = 2945168881 is a prime.

It is a super-2 number, since 2×2945168885² = 17348039522344286450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2945168885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2945168881) 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, 294516884 + ... + 294516893.

It is an arithmetic number, because the mean of its divisors is an integer number (883550667).

Almost surely, 2^2945168885 is an apocalyptic number.

It is an amenable number.

2945168885 is a deficient number, since it is larger than the sum of its proper divisors (589033783).

2945168885 is an equidigital number, since it uses as much as digits as its factorization.

2945168885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589033782.

The product of its digits is 5529600, while the sum is 56.

The square root of 2945168885 is about 54269.4102142266. The cubic root of 2945168885 is about 1433.4088049618.

The spelling of 2945168885 in words is "two billion, nine hundred forty-five million, one hundred sixty-eight thousand, eight hundred eighty-five".