3944518585 has 64 divisors (see below), whose sum is σ = 5989662720. Its totient is φ = 2431503360.

The previous prime is 3944518583. The next prime is 3944518601. The reversal of 3944518585 is 5858154493.

It is a happy number.

It is not a de Polignac number, because 3944518585 - 2¹ = 3944518583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3944518583) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1455802 + ... + 1458508.

It is an arithmetic number, because the mean of its divisors is an integer number (93588480).

Almost surely, 2^3944518585 is an apocalyptic number.

3944518585 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3944518585 is a deficient number, since it is larger than the sum of its proper divisors (2045144135).

3944518585 is a wasteful number, since it uses less digits than its factorization.

3944518585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846.

The product of its digits is 3456000, while the sum is 52.

The square root of 3944518585 is about 62805.4025144334. The cubic root of 3944518585 is about 1580.0275839066.

The spelling of 3944518585 in words is "three billion, nine hundred forty-four million, five hundred eighteen thousand, five hundred eighty-five".