166160101 has 4 divisors (see below), whose sum is σ = 166849804. Its totient is φ = 165470400.

The previous prime is 166160089. The next prime is 166160117. The reversal of 166160101 is 101061661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101061661 = 67 ⋅1508383.

It can be written as a sum of positive squares in 2 ways, for example, as 143976001 + 22184100 = 11999^2 + 4710^2 .

It is a cyclic number.

It is not a de Polignac number, because 166160101 - 2¹⁵ = 166127333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166160171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344490 + ... + 344971.

It is an arithmetic number, because the mean of its divisors is an integer number (41712451).

Almost surely, 2^166160101 is an apocalyptic number.

It is an amenable number.

166160101 is a deficient number, since it is larger than the sum of its proper divisors (689703).

166160101 is an equidigital number, since it uses as much as digits as its factorization.

166160101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689702.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 166160101 is about 12890.3103531296. The cubic root of 166160101 is about 549.7630946650.

The spelling of 166160101 in words is "one hundred sixty-six million, one hundred sixty thousand, one hundred one".