201806461 has 2 divisors, whose sum is σ = 201806462. Its totient is φ = 201806460.

The previous prime is 201806459. The next prime is 201806471. The reversal of 201806461 is 164608102.

201806461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156500100 + 45306361 = 12510^2 + 6731^2 .

It is a cyclic number.

It is not a de Polignac number, because 201806461 - 2¹ = 201806459 is a prime.

Together with 201806459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201806431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100903230 + 100903231.

It is an arithmetic number, because the mean of its divisors is an integer number (100903231).

Almost surely, 2^201806461 is an apocalyptic number.

It is an amenable number.

201806461 is a deficient number, since it is larger than the sum of its proper divisors (1).

201806461 is an equidigital number, since it uses as much as digits as its factorization.

201806461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 201806461 is about 14205.8600936374. The cubic root of 201806461 is about 586.5589810026.

The spelling of 201806461 in words is "two hundred one million, eight hundred six thousand, four hundred sixty-one".