3834667021 has 2 divisors, whose sum is σ = 3834667022. Its totient is φ = 3834667020.

The previous prime is 3834667003. The next prime is 3834667027. The reversal of 3834667021 is 1207664383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2251502500 + 1583164521 = 47450^2 + 39789^2 .

It is an emirp because it is prime and its reverse (1207664383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3834667021 - 2¹⁵ = 3834634253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3834667027) 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 as a sum of consecutive naturals, namely, 1917333510 + 1917333511.

It is an arithmetic number, because the mean of its divisors is an integer number (1917333511).

Almost surely, 2^3834667021 is an apocalyptic number.

It is an amenable number.

3834667021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3834667021 is an equidigital number, since it uses as much as digits as its factorization.

3834667021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 3834667021 is about 61924.6882995789. The cubic root of 3834667021 is about 1565.2217932926.

The spelling of 3834667021 in words is "three billion, eight hundred thirty-four million, six hundred sixty-seven thousand, twenty-one".