160438081 has 4 divisors (see below), whose sum is σ = 161910100. Its totient is φ = 158966064.

The previous prime is 160438079. The next prime is 160438093. The reversal of 160438081 is 180834061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180834061 = 4861 ⋅37201.

It can be written as a sum of positive squares in 2 ways, for example, as 57517056 + 102921025 = 7584^2 + 10145^2 .

It is a cyclic number.

It is not a de Polignac number, because 160438081 - 2¹ = 160438079 is a prime.

It is a super-2 number, since 2×160438081² = 51480755669925122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160438001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735846 + ... + 736063.

It is an arithmetic number, because the mean of its divisors is an integer number (40477525).

Almost surely, 2^160438081 is an apocalyptic number.

It is an amenable number.

160438081 is a deficient number, since it is larger than the sum of its proper divisors (1472019).

160438081 is a wasteful number, since it uses less digits than its factorization.

160438081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472018.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 160438081 is about 12666.4154755795. The cubic root of 160438081 is about 543.3785446296.

The spelling of 160438081 in words is "one hundred sixty million, four hundred thirty-eight thousand, eighty-one".