160981237 has 2 divisors, whose sum is σ = 160981238. Its totient is φ = 160981236.

The previous prime is 160981229. The next prime is 160981241. The reversal of 160981237 is 732189061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149597361 + 11383876 = 12231^2 + 3374^2 .

It is a cyclic number.

It is not a de Polignac number, because 160981237 - 2³ = 160981229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 160981196 and 160981205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160981277) 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, 80490618 + 80490619.

It is an arithmetic number, because the mean of its divisors is an integer number (80490619).

Almost surely, 2^160981237 is an apocalyptic number.

It is an amenable number.

160981237 is a deficient number, since it is larger than the sum of its proper divisors (1).

160981237 is an equidigital number, since it uses as much as digits as its factorization.

160981237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 160981237 is about 12687.8381531292. The cubic root of 160981237 is about 543.9910485930.

The spelling of 160981237 in words is "one hundred sixty million, nine hundred eighty-one thousand, two hundred thirty-seven".