201838541 has 2 divisors, whose sum is σ = 201838542. Its totient is φ = 201838540.

The previous prime is 201838537. The next prime is 201838573. The reversal of 201838541 is 145838102.

It is an a-pointer prime, because the next prime (201838573) can be obtained adding 201838541 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200109316 + 1729225 = 14146^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 201838541 - 2² = 201838537 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201838498 and 201838507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201838141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100919270 + 100919271.

It is an arithmetic number, because the mean of its divisors is an integer number (100919271).

Almost surely, 2^201838541 is an apocalyptic number.

It is an amenable number.

201838541 is a deficient number, since it is larger than the sum of its proper divisors (1).

201838541 is an equidigital number, since it uses as much as digits as its factorization.

201838541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 201838541 is about 14206.9891602690. The cubic root of 201838541 is about 586.5900599797.

The spelling of 201838541 in words is "two hundred one million, eight hundred thirty-eight thousand, five hundred forty-one".