2398672865 has 12 divisors (see below), whose sum is σ = 2885901564. Its totient is φ = 1913951616.

The previous prime is 2398672849. The next prime is 2398672873. The reversal of 2398672865 is 5682768932.

It can be written as a sum of positive squares in 6 ways, for example, as 947900944 + 1450771921 = 30788^2 + 38089^2 .

It is not a de Polignac number, because 2398672865 - 2⁴ = 2398672849 is a prime.

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 2398672865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2964581 + ... + 2965389.

It is an arithmetic number, because the mean of its divisors is an integer number (240491797).

Almost surely, 2^2398672865 is an apocalyptic number.

It is an amenable number.

2398672865 is a deficient number, since it is larger than the sum of its proper divisors (487228699).

2398672865 is an frugal number, since it uses more digits than its factorization.

2398672865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356 (or 1547 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The square root of 2398672865 is about 48976.2479677649. The cubic root of 2398672865 is about 1338.6190691345.

The spelling of 2398672865 in words is "two billion, three hundred ninety-eight million, six hundred seventy-two thousand, eight hundred sixty-five".