163537289 has 2 divisors, whose sum is σ = 163537290. Its totient is φ = 163537288.

The previous prime is 163537243. The next prime is 163537357. The reversal of 163537289 is 982735361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122832889 + 40704400 = 11083^2 + 6380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163537289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (163537219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81768644 + 81768645.

It is an arithmetic number, because the mean of its divisors is an integer number (81768645).

Almost surely, 2^163537289 is an apocalyptic number.

It is an amenable number.

163537289 is a deficient number, since it is larger than the sum of its proper divisors (1).

163537289 is an equidigital number, since it uses as much as digits as its factorization.

163537289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 163537289 is about 12788.1698847020. The cubic root of 163537289 is about 546.8550974373.

The spelling of 163537289 in words is "one hundred sixty-three million, five hundred thirty-seven thousand, two hundred eighty-nine".