1660165101 has 12 divisors (see below), whose sum is σ = 2740590112. Its totient is φ = 948665736.

The previous prime is 1660165079. The next prime is 1660165159. The reversal of 1660165101 is 1015610661.

1660165101 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 1 + 651 + 0 + 1 = 666.

It is not a de Polignac number, because 1660165101 - 2¹⁵ = 1660132333 is a prime.

It is a super-2 number, since 2×1660165101² = 5512296325156680402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660165601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13175851 + ... + 13175976.

Almost surely, 2^1660165101 is an apocalyptic number.

It is an amenable number.

1660165101 is a deficient number, since it is larger than the sum of its proper divisors (1080425011).

1660165101 is a wasteful number, since it uses less digits than its factorization.

1660165101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26351840 (or 26351837 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1660165101 is about 40745.1236468856. The cubic root of 1660165101 is about 1184.0874007663.

Adding to 1660165101 its reverse (1015610661), we get a palindrome (2675775762).

The spelling of 1660165101 in words is "one billion, six hundred sixty million, one hundred sixty-five thousand, one hundred one".