4391768865 has 32 divisors (see below), whose sum is σ = 8116557696. Its totient is φ = 2004085760.

The previous prime is 4391768861. The next prime is 4391768867. The reversal of 4391768865 is 5688671934.

It is not a de Polignac number, because 4391768865 - 2² = 4391768861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4391768861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 780042 + ... + 785651.

It is an arithmetic number, because the mean of its divisors is an integer number (253642428).

Almost surely, 2^4391768865 is an apocalyptic number.

It is an amenable number.

4391768865 is a deficient number, since it is larger than the sum of its proper divisors (3724788831).

4391768865 is a wasteful number, since it uses less digits than its factorization.

4391768865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565729.

The product of its digits is 8709120, while the sum is 57.

The square root of 4391768865 is about 66270.4222485416. The cubic root of 4391768865 is about 1637.6200936726.

The spelling of 4391768865 in words is "four billion, three hundred ninety-one million, seven hundred sixty-eight thousand, eight hundred sixty-five".