2489917816 has 32 divisors (see below), whose sum is σ = 4692240000. Its totient is φ = 1238672736.

The previous prime is 2489917811. The next prime is 2489917819. The reversal of 2489917816 is 6187199842.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489917811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1779085 + ... + 1780483.

It is an arithmetic number, because the mean of its divisors is an integer number (146632500).

Almost surely, 2^2489917816 is an apocalyptic number.

It is an amenable number.

2489917816 is a deficient number, since it is larger than the sum of its proper divisors (2202322184).

2489917816 is a wasteful number, since it uses less digits than its factorization.

2489917816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371 (or 2367 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 55.

The square root of 2489917816 is about 49899.0763040760. The cubic root of 2489917816 is about 1355.3818662924.

The spelling of 2489917816 in words is "two billion, four hundred eighty-nine million, nine hundred seventeen thousand, eight hundred sixteen".