163805461 has 2 divisors, whose sum is σ = 163805462. Its totient is φ = 163805460.

The previous prime is 163805443. The next prime is 163805483. The reversal of 163805461 is 164508361.

It is a happy number.

163805461 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., 163686436 + 119025 = 12794^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 163805461 - 2¹³ = 163797269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163805491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81902730 + 81902731.

It is an arithmetic number, because the mean of its divisors is an integer number (81902731).

Almost surely, 2^163805461 is an apocalyptic number.

It is an amenable number.

163805461 is a deficient number, since it is larger than the sum of its proper divisors (1).

163805461 is an equidigital number, since it uses as much as digits as its factorization.

163805461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 163805461 is about 12798.6507492001. The cubic root of 163805461 is about 547.1538491541.

The spelling of 163805461 in words is "one hundred sixty-three million, eight hundred five thousand, four hundred sixty-one".