4381965778 has 16 divisors (see below), whose sum is σ = 6613196544. Its totient is φ = 2177600400.

The previous prime is 4381965769. The next prime is 4381965779. The reversal of 4381965778 is 8775691834.

It is not an unprimeable number, because it can be changed into a prime (4381965779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267628 + ... + 283528.

It is an arithmetic number, because the mean of its divisors is an integer number (413324784).

Almost surely, 2^4381965778 is an apocalyptic number.

4381965778 is a deficient number, since it is larger than the sum of its proper divisors (2231230766).

4381965778 is a wasteful number, since it uses less digits than its factorization.

4381965778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16737.

The product of its digits is 10160640, while the sum is 58.

The square root of 4381965778 is about 66196.4181659401. The cubic root of 4381965778 is about 1636.4007146965.

The spelling of 4381965778 in words is "four billion, three hundred eighty-one million, nine hundred sixty-five thousand, seven hundred seventy-eight".