165871107 has 6 divisors (see below), whose sum is σ = 239591612. Its totient is φ = 110580732.

The previous prime is 165871087. The next prime is 165871129. The reversal of 165871107 is 701178561.

It is a happy number.

It is not a de Polignac number, because 165871107 - 2⁸ = 165870851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165871157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9215053 + ... + 9215070.

Almost surely, 2^165871107 is an apocalyptic number.

165871107 is a deficient number, since it is larger than the sum of its proper divisors (73720505).

165871107 is a wasteful number, since it uses less digits than its factorization.

165871107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18430129 (or 18430126 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 36.

The square root of 165871107 is about 12879.0957368908. The cubic root of 165871107 is about 549.4441845022. Note that the first 3 decimals are identical.

The spelling of 165871107 in words is "one hundred sixty-five million, eight hundred seventy-one thousand, one hundred seven".