3851420209 has 16 divisors (see below), whose sum is σ = 4743101440. Its totient is φ = 3045418560.

The previous prime is 3851420207. The next prime is 3851420249. The reversal of 3851420209 is 9020241583.

3851420209 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3851420209 - 2¹ = 3851420207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3851420207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148039 + ... + 172099.

It is an arithmetic number, because the mean of its divisors is an integer number (296443840).

Almost surely, 2^3851420209 is an apocalyptic number.

It is an amenable number.

3851420209 is a deficient number, since it is larger than the sum of its proper divisors (891681231).

3851420209 is a wasteful number, since it uses less digits than its factorization.

3851420209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25840.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 3851420209 is about 62059.8115449926. The cubic root of 3851420209 is about 1567.4979022464.

The spelling of 3851420209 in words is "three billion, eight hundred fifty-one million, four hundred twenty thousand, two hundred nine".