3856682989 has 2 divisors, whose sum is σ = 3856682990. Its totient is φ = 3856682988.

The previous prime is 3856682983. The next prime is 3856683091. The reversal of 3856682989 is 9892866583.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3345696964 + 510986025 = 57842^2 + 22605^2 .

It is a cyclic number.

It is not a de Polignac number, because 3856682989 - 2³ = 3856682981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3856682989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3856682981) 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, 1928341494 + 1928341495.

It is an arithmetic number, because the mean of its divisors is an integer number (1928341495).

Almost surely, 2^3856682989 is an apocalyptic number.

It is an amenable number.

3856682989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3856682989 is an equidigital number, since it uses as much as digits as its factorization.

3856682989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44789760, while the sum is 64.

The square root of 3856682989 is about 62102.1979401696. The cubic root of 3856682989 is about 1568.2115473907.

The spelling of 3856682989 in words is "three billion, eight hundred fifty-six million, six hundred eighty-two thousand, nine hundred eighty-nine".