2938489865 has 64 divisors (see below), whose sum is σ = 3984655680. Its totient is φ = 2077470720.

The previous prime is 2938489843. The next prime is 2938489889. The reversal of 2938489865 is 5689848392.

It can be written as a sum of positive squares in 32 ways, for example, as 1412181241 + 1526308624 = 37579^2 + 39068^2 .

It is not a de Polignac number, because 2938489865 - 2²⁰ = 2937441289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2938489798 and 2938489807.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48171935 + ... + 48171995.

It is an arithmetic number, because the mean of its divisors is an integer number (62260245).

Almost surely, 2^2938489865 is an apocalyptic number.

It is an amenable number.

2938489865 is a deficient number, since it is larger than the sum of its proper divisors (1046165815).

2938489865 is an equidigital number, since it uses as much as digits as its factorization.

2938489865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 173 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 62.

The square root of 2938489865 is about 54207.8395160700. The cubic root of 2938489865 is about 1432.3244288559.

The spelling of 2938489865 in words is "two billion, nine hundred thirty-eight million, four hundred eighty-nine thousand, eight hundred sixty-five".