163185047 has 2 divisors, whose sum is σ = 163185048. Its totient is φ = 163185046.

The previous prime is 163185019. The next prime is 163185067. The reversal of 163185047 is 740581361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163185047 - 2²⁴ = 146407831 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 163184998 and 163185016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163185067) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81592523 + 81592524.

It is an arithmetic number, because the mean of its divisors is an integer number (81592524).

Almost surely, 2^163185047 is an apocalyptic number.

163185047 is a deficient number, since it is larger than the sum of its proper divisors (1).

163185047 is an equidigital number, since it uses as much as digits as its factorization.

163185047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 163185047 is about 12774.3902789918. The cubic root of 163185047 is about 546.4621925565.

The spelling of 163185047 in words is "one hundred sixty-three million, one hundred eighty-five thousand, forty-seven".