160613581 has 2 divisors, whose sum is σ = 160613582. Its totient is φ = 160613580.

The previous prime is 160613561. The next prime is 160613599. The reversal of 160613581 is 185316061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160528900 + 84681 = 12670^2 + 291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160613581 is a prime.

It is a super-2 number, since 2×160613581² = 51593444803287122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160613561) 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, 80306790 + 80306791.

It is an arithmetic number, because the mean of its divisors is an integer number (80306791).

Almost surely, 2^160613581 is an apocalyptic number.

It is an amenable number.

160613581 is a deficient number, since it is larger than the sum of its proper divisors (1).

160613581 is an equidigital number, since it uses as much as digits as its factorization.

160613581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 160613581 is about 12673.3413510408. The cubic root of 160613581 is about 543.5766027283.

The spelling of 160613581 in words is "one hundred sixty million, six hundred thirteen thousand, five hundred eighty-one".