165471849 has 8 divisors (see below), whose sum is σ = 245143520. Its totient is φ = 110314548.

The previous prime is 165471847. The next prime is 165471851. The reversal of 165471849 is 948174561.

It is an interprime number because it is at equal distance from previous prime (165471847) and next prime (165471851).

It is not a de Polignac number, because 165471849 - 2¹ = 165471847 is a prime.

It is a super-2 number, since 2×165471849² = 54761865622957602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165471841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3064267 + ... + 3064320.

It is an arithmetic number, because the mean of its divisors is an integer number (30642940).

Almost surely, 2^165471849 is an apocalyptic number.

It is an amenable number.

165471849 is a deficient number, since it is larger than the sum of its proper divisors (79671671).

165471849 is an equidigital number, since it uses as much as digits as its factorization.

165471849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128596 (or 6128590 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 165471849 is about 12863.5861640524. The cubic root of 165471849 is about 549.0029860389.

The spelling of 165471849 in words is "one hundred sixty-five million, four hundred seventy-one thousand, eight hundred forty-nine".