84540163 has 2 divisors, whose sum is σ = 84540164. Its totient is φ = 84540162.

The previous prime is 84540161. The next prime is 84540173. The reversal of 84540163 is 36104548.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84540163 - 2¹ = 84540161 is a prime.

Together with 84540161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84540161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42270081 + 42270082.

It is an arithmetic number, because the mean of its divisors is an integer number (42270082).

Almost surely, 2^84540163 is an apocalyptic number.

84540163 is a deficient number, since it is larger than the sum of its proper divisors (1).

84540163 is an equidigital number, since it uses as much as digits as its factorization.

84540163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 84540163 is about 9194.5724751073. The cubic root of 84540163 is about 438.8886605944. Note that the first 3 decimals are identical.

The spelling of 84540163 in words is "eighty-four million, five hundred forty thousand, one hundred sixty-three".