3852768221 has 2 divisors, whose sum is σ = 3852768222. Its totient is φ = 3852768220.

The previous prime is 3852768217. The next prime is 3852768253. The reversal of 3852768221 is 1228672583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3728445721 + 124322500 = 61061^2 + 11150^2 .

It is a cyclic number.

It is not a de Polignac number, because 3852768221 - 2² = 3852768217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3852768121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1926384110 + 1926384111.

It is an arithmetic number, because the mean of its divisors is an integer number (1926384111).

Almost surely, 2^3852768221 is an apocalyptic number.

It is an amenable number.

3852768221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3852768221 is an equidigital number, since it uses as much as digits as its factorization.

3852768221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 3852768221 is about 62070.6711821292. The cubic root of 3852768221 is about 1567.6807576950.

The spelling of 3852768221 in words is "three billion, eight hundred fifty-two million, seven hundred sixty-eight thousand, two hundred twenty-one".