3981224145 has 8 divisors (see below), whose sum is σ = 6369958656. Its totient is φ = 2123319536.

The previous prime is 3981224119. The next prime is 3981224209. The reversal of 3981224145 is 5414221893.

3981224145 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3981224145 - 2⁹ = 3981223633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132707457 + ... + 132707486.

It is an arithmetic number, because the mean of its divisors is an integer number (796244832).

Almost surely, 2^3981224145 is an apocalyptic number.

It is an amenable number.

3981224145 is a deficient number, since it is larger than the sum of its proper divisors (2388734511).

3981224145 is a wasteful number, since it uses less digits than its factorization.

3981224145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265414951.

The product of its digits is 69120, while the sum is 39.

The square root of 3981224145 is about 63096.9424378076. The cubic root of 3981224145 is about 1584.9134212843.

The spelling of 3981224145 in words is "three billion, nine hundred eighty-one million, two hundred twenty-four thousand, one hundred forty-five".