2182439865 has 16 divisors (see below), whose sum is σ = 3495220416. Its totient is φ = 1162862400.

The previous prime is 2182439849. The next prime is 2182439927. The reversal of 2182439865 is 5689342812.

It is not a de Polignac number, because 2182439865 - 2⁴ = 2182439849 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, 52651 + ... + 84480.

It is an arithmetic number, because the mean of its divisors is an integer number (218451276).

Almost surely, 2^2182439865 is an apocalyptic number.

It is an amenable number.

2182439865 is a deficient number, since it is larger than the sum of its proper divisors (1312780551).

2182439865 is a wasteful number, since it uses less digits than its factorization.

2182439865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138200.

The product of its digits is 829440, while the sum is 48.

The square root of 2182439865 is about 46716.5908965969. The cubic root of 2182439865 is about 1297.1218109173.

The spelling of 2182439865 in words is "two billion, one hundred eighty-two million, four hundred thirty-nine thousand, eight hundred sixty-five".