1842808189 has 2 divisors, whose sum is σ = 1842808190. Its totient is φ = 1842808188.

The previous prime is 1842808159. The next prime is 1842808229. The reversal of 1842808189 is 9818082481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1835436964 + 7371225 = 42842^2 + 2715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1842808189 - 2¹⁵ = 1842775421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1842808159) 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, 921404094 + 921404095.

It is an arithmetic number, because the mean of its divisors is an integer number (921404095).

Almost surely, 2^1842808189 is an apocalyptic number.

It is an amenable number.

1842808189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1842808189 is an equidigital number, since it uses as much as digits as its factorization.

1842808189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 49.

The square root of 1842808189 is about 42927.9418211495. The cubic root of 1842808189 is about 1226.0082082237.

The spelling of 1842808189 in words is "one billion, eight hundred forty-two million, eight hundred eight thousand, one hundred eighty-nine".