201839081 has 2 divisors, whose sum is σ = 201839082. Its totient is φ = 201839080.

The previous prime is 201839063. The next prime is 201839083. The reversal of 201839081 is 180938102.

201839081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201498025 + 341056 = 14195^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 201839081 - 2¹⁴ = 201822697 is a prime.

It is a super-2 number, since 2×201839081² = 81478029237849122, which contains 22 as substring.

Together with 201839083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201839083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100919540 + 100919541.

It is an arithmetic number, because the mean of its divisors is an integer number (100919541).

Almost surely, 2^201839081 is an apocalyptic number.

It is an amenable number.

201839081 is a deficient number, since it is larger than the sum of its proper divisors (1).

201839081 is an equidigital number, since it uses as much as digits as its factorization.

201839081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 201839081 is about 14207.0081649867. The cubic root of 201839081 is about 586.5905831013.

The spelling of 201839081 in words is "two hundred one million, eight hundred thirty-nine thousand, eighty-one".