160911857 has 4 divisors (see below), whose sum is σ = 161155956. Its totient is φ = 160667760.

The previous prime is 160911811. The next prime is 160911889. The reversal of 160911857 is 758119061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 758119061 = 7 ⋅108302723.

It can be written as a sum of positive squares in 2 ways, for example, as 97693456 + 63218401 = 9884^2 + 7951^2 .

It is a cyclic number.

It is not a de Polignac number, because 160911857 - 2⁸ = 160911601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 160911857.

It is not an unprimeable number, because it can be changed into a prime (160916857) 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, 121058 + ... + 122379.

It is an arithmetic number, because the mean of its divisors is an integer number (40288989).

Almost surely, 2^160911857 is an apocalyptic number.

It is an amenable number.

160911857 is a deficient number, since it is larger than the sum of its proper divisors (244099).

160911857 is an equidigital number, since it uses as much as digits as its factorization.

160911857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244098.

The product of its (nonzero) digits is 15120, while the sum is 38.

The square root of 160911857 is about 12685.1037441560. The cubic root of 160911857 is about 543.9128872639.

The spelling of 160911857 in words is "one hundred sixty million, nine hundred eleven thousand, eight hundred fifty-seven".