3850016721 has 8 divisors (see below), whose sum is σ = 5403532320. Its totient is φ = 2431589472.

The previous prime is 3850016719. The next prime is 3850016743. The reversal of 3850016721 is 1276100583.

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

It is not a de Polignac number, because 3850016721 - 2¹ = 3850016719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3850016711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33772020 + ... + 33772133.

It is an arithmetic number, because the mean of its divisors is an integer number (675441540).

Almost surely, 2^3850016721 is an apocalyptic number.

It is an amenable number.

3850016721 is a deficient number, since it is larger than the sum of its proper divisors (1553515599).

3850016721 is a wasteful number, since it uses less digits than its factorization.

3850016721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67544175.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 3850016721 is about 62048.5029714658. The cubic root of 3850016721 is about 1567.3074762340.

The spelling of 3850016721 in words is "three billion, eight hundred fifty million, sixteen thousand, seven hundred twenty-one".