3842189009 has 2 divisors, whose sum is σ = 3842189010. Its totient is φ = 3842189008.

The previous prime is 3842188993. The next prime is 3842189027. The reversal of 3842189009 is 9009812483.

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., 3772416400 + 69772609 = 61420^2 + 8353^2 .

It is a cyclic number.

It is not a de Polignac number, because 3842189009 - 2⁴ = 3842188993 is a prime.

It is not a weakly prime, because it can be changed into another prime (3842149009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1921094504 + 1921094505.

It is an arithmetic number, because the mean of its divisors is an integer number (1921094505).

Almost surely, 2^3842189009 is an apocalyptic number.

It is an amenable number.

3842189009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3842189009 is an equidigital number, since it uses as much as digits as its factorization.

3842189009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 3842189009 is about 61985.3935133109. The cubic root of 3842189009 is about 1566.2445582947.

The spelling of 3842189009 in words is "three billion, eight hundred forty-two million, one hundred eighty-nine thousand, nine".