160934581 has 2 divisors, whose sum is σ = 160934582. Its totient is φ = 160934580.

The previous prime is 160934573. The next prime is 160934623. The reversal of 160934581 is 185439061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116445681 + 44488900 = 10791^2 + 6670^2 .

It is an emirp because it is prime and its reverse (185439061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 160934581 - 2³ = 160934573 is a prime.

It is a super-2 number, since 2×160934581² = 51799878723291122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 160934581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160934551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80467290 + 80467291.

It is an arithmetic number, because the mean of its divisors is an integer number (80467291).

Almost surely, 2^160934581 is an apocalyptic number.

It is an amenable number.

160934581 is a deficient number, since it is larger than the sum of its proper divisors (1).

160934581 is an equidigital number, since it uses as much as digits as its factorization.

160934581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 160934581 is about 12685.9994087971. Note that the first 3 decimals coincide. The cubic root of 160934581 is about 543.9384898825.

The spelling of 160934581 in words is "one hundred sixty million, nine hundred thirty-four thousand, five hundred eighty-one".