3981229185 has 32 divisors (see below), whose sum is σ = 6594359040. Its totient is φ = 2048630528.

The previous prime is 3981229181. The next prime is 3981229207. The reversal of 3981229185 is 5819221893.

3981229185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3981229185 - 2² = 3981229181 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3981229181) 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, 866404 + ... + 870986.

It is an arithmetic number, because the mean of its divisors is an integer number (206073720).

Almost surely, 2^3981229185 is an apocalyptic number.

It is an amenable number.

3981229185 is a deficient number, since it is larger than the sum of its proper divisors (2613129855).

3981229185 is a wasteful number, since it uses less digits than its factorization.

3981229185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6617.

The product of its digits is 311040, while the sum is 48.

The square root of 3981229185 is about 63096.9823763387. The cubic root of 3981229185 is about 1584.9140900870.

The spelling of 3981229185 in words is "three billion, nine hundred eighty-one million, two hundred twenty-nine thousand, one hundred eighty-five".