160661959 has 2 divisors, whose sum is σ = 160661960. Its totient is φ = 160661958.

The previous prime is 160661947. The next prime is 160661981. The reversal of 160661959 is 959166061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 160661959 - 2⁹ = 160661447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160691959) 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, 80330979 + 80330980.

It is an arithmetic number, because the mean of its divisors is an integer number (80330980).

Almost surely, 2^160661959 is an apocalyptic number.

160661959 is a deficient number, since it is larger than the sum of its proper divisors (1).

160661959 is an equidigital number, since it uses as much as digits as its factorization.

160661959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 160661959 is about 12675.2498594702. The cubic root of 160661959 is about 543.6311736823.

The spelling of 160661959 in words is "one hundred sixty million, six hundred sixty-one thousand, nine hundred fifty-nine".