2489939665 has 16 divisors (see below), whose sum is σ = 3018637440. Its totient is φ = 1971567360.

The previous prime is 2489939611. The next prime is 2489939677. The reversal of 2489939665 is 5669399842.

2489939665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2489939665 - 2⁷ = 2489939537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228900 + ... + 239530.

It is an arithmetic number, because the mean of its divisors is an integer number (188664840).

Almost surely, 2^2489939665 is an apocalyptic number.

It is an amenable number.

2489939665 is a deficient number, since it is larger than the sum of its proper divisors (528697775).

2489939665 is a wasteful number, since it uses less digits than its factorization.

2489939665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11112.

The product of its digits is 25194240, while the sum is 61.

The square root of 2489939665 is about 49899.2952355041. The cubic root of 2489939665 is about 1355.3858307675.

The spelling of 2489939665 in words is "two billion, four hundred eighty-nine million, nine hundred thirty-nine thousand, six hundred sixty-five".