3820855669 has 2 divisors, whose sum is σ = 3820855670. Its totient is φ = 3820855668.

The previous prime is 3820855667. The next prime is 3820855681. The reversal of 3820855669 is 9665580283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3800722500 + 20133169 = 61650^2 + 4487^2 .

It is a cyclic number.

It is not a de Polignac number, because 3820855669 - 2¹ = 3820855667 is a prime.

It is a super-2 number, since 2×3820855669² = 29197876086658875122, which contains 22 as substring.

Together with 3820855667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3820855663) 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 as a sum of consecutive naturals, namely, 1910427834 + 1910427835.

It is an arithmetic number, because the mean of its divisors is an integer number (1910427835).

Almost surely, 2^3820855669 is an apocalyptic number.

It is an amenable number.

3820855669 is a deficient number, since it is larger than the sum of its proper divisors (1).

3820855669 is an equidigital number, since it uses as much as digits as its factorization.

3820855669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The square root of 3820855669 is about 61813.0703735060. The cubic root of 3820855669 is about 1563.3403752722.

The spelling of 3820855669 in words is "three billion, eight hundred twenty million, eight hundred fifty-five thousand, six hundred sixty-nine".