163560389 has 2 divisors, whose sum is σ = 163560390. Its totient is φ = 163560388.

The previous prime is 163560361. The next prime is 163560401. The reversal of 163560389 is 983065361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159390625 + 4169764 = 12625^2 + 2042^2 .

It is a cyclic number.

It is not a de Polignac number, because 163560389 - 2²⁴ = 146783173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163560989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81780194 + 81780195.

It is an arithmetic number, because the mean of its divisors is an integer number (81780195).

Almost surely, 2^163560389 is an apocalyptic number.

It is an amenable number.

163560389 is a deficient number, since it is larger than the sum of its proper divisors (1).

163560389 is an equidigital number, since it uses as much as digits as its factorization.

163560389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 163560389 is about 12789.0730313029. The cubic root of 163560389 is about 546.8808443849.

It can be divided in two parts, 163560 and 389, that multiplied together give a triangular number (63624840 = T₁₁₂₈₀).

The spelling of 163560389 in words is "one hundred sixty-three million, five hundred sixty thousand, three hundred eighty-nine".