2145896168 has 16 divisors (see below), whose sum is σ = 4333059780. Its totient is φ = 990413568.

The previous prime is 2145896099. The next prime is 2145896173. The reversal of 2145896168 is 8616985412.

It can be written as a sum of positive squares in 2 ways, for example, as 2119865764 + 26030404 = 46042^2 + 5102^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10316705 + ... + 10316912.

Almost surely, 2^2145896168 is an apocalyptic number.

It is an amenable number.

2145896168 is an abundant number, since it is smaller than the sum of its proper divisors (2187163612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145896168 is a wasteful number, since it uses less digits than its factorization.

2145896168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20633636 (or 20633632 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 2145896168 is about 46323.8185818052. The cubic root of 2145896168 is about 1289.8411694760.

The spelling of 2145896168 in words is "two billion, one hundred forty-five million, eight hundred ninety-six thousand, one hundred sixty-eight".