165429173 has 16 divisors (see below), whose sum is σ = 204919680. Its totient is φ = 130044096.

The previous prime is 165429163. The next prime is 165429197. The reversal of 165429173 is 371924561.

It is not a de Polignac number, because 165429173 - 2⁴ = 165429157 is a prime.

It is a super-2 number, since 2×165429173² = 54733622558927858, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165429163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8498 + ... + 20076.

It is an arithmetic number, because the mean of its divisors is an integer number (12807480).

Almost surely, 2^165429173 is an apocalyptic number.

165429173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

165429173 is a deficient number, since it is larger than the sum of its proper divisors (39490507).

165429173 is a wasteful number, since it uses less digits than its factorization.

165429173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11756.

The product of its digits is 45360, while the sum is 38.

The square root of 165429173 is about 12861.9272661604. The cubic root of 165429173 is about 548.9557851282.

The spelling of 165429173 in words is "one hundred sixty-five million, four hundred twenty-nine thousand, one hundred seventy-three".