201838837 has 2 divisors, whose sum is σ = 201838838. Its totient is φ = 201838836.

The previous prime is 201838783. The next prime is 201838853. The reversal of 201838837 is 738838102.

201838837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (201838783) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192682161 + 9156676 = 13881^2 + 3026^2 .

It is a cyclic number.

It is not a de Polignac number, because 201838837 - 2⁷ = 201838709 is a prime.

It is a super-2 number, since 2×201838837² = 81477832243025138, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201838837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201838877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100919418 + 100919419.

It is an arithmetic number, because the mean of its divisors is an integer number (100919419).

Almost surely, 2^201838837 is an apocalyptic number.

It is an amenable number.

201838837 is a deficient number, since it is larger than the sum of its proper divisors (1).

201838837 is an equidigital number, since it uses as much as digits as its factorization.

201838837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 201838837 is about 14206.9995776730. Note that the first 3 decimals coincide. The cubic root of 201838837 is about 586.5903467280.

The spelling of 201838837 in words is "two hundred one million, eight hundred thirty-eight thousand, eight hundred thirty-seven".