165164211 has 8 divisors (see below), whose sum is σ = 244687760. Its totient is φ = 110109456.

The previous prime is 165164203. The next prime is 165164221. The reversal of 165164211 is 112461561.

165164211 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 642 + 11 = 666.

165164211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165164211 - 2³ = 165164203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 6117193 = 165164211 / (1 + 6 + 5 + 1 + 6 + 4 + 2 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165164221) 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, 3058570 + ... + 3058623.

It is an arithmetic number, because the mean of its divisors is an integer number (30585970).

Almost surely, 2^165164211 is an apocalyptic number.

165164211 is a deficient number, since it is larger than the sum of its proper divisors (79523549).

165164211 is an equidigital number, since it uses as much as digits as its factorization.

165164211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6117202 (or 6117196 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 165164211 is about 12851.6228936271. The cubic root of 165164211 is about 548.6625475559.

It can be divided in two parts, 1651642 and 11, that added together give a triangular number (1651653 = T₁₈₁₇).

The spelling of 165164211 in words is "one hundred sixty-five million, one hundred sixty-four thousand, two hundred eleven".