160735681 has 2 divisors, whose sum is σ = 160735682. Its totient is φ = 160735680.

The previous prime is 160735669. The next prime is 160735699. The reversal of 160735681 is 186537061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116964225 + 43771456 = 10815^2 + 6616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160735681 is a prime.

It is a super-2 number, since 2×160735681² = 51671918293067522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 160735681.

It is not a weakly prime, because it can be changed into another prime (160735181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80367840 + 80367841.

It is an arithmetic number, because the mean of its divisors is an integer number (80367841).

Almost surely, 2^160735681 is an apocalyptic number.

It is an amenable number.

160735681 is a deficient number, since it is larger than the sum of its proper divisors (1).

160735681 is an equidigital number, since it uses as much as digits as its factorization.

160735681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 160735681 is about 12678.1576342937. The cubic root of 160735681 is about 543.7143119044.

The spelling of 160735681 in words is "one hundred sixty million, seven hundred thirty-five thousand, six hundred eighty-one".