165211093 has 8 divisors (see below), whose sum is σ = 173361600. Its totient is φ = 157141248.

The previous prime is 165211019. The next prime is 165211141. The reversal of 165211093 is 390112561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165211093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165211003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15948 + ... + 24181.

It is an arithmetic number, because the mean of its divisors is an integer number (21670200).

Almost surely, 2^165211093 is an apocalyptic number.

It is an amenable number.

165211093 is a deficient number, since it is larger than the sum of its proper divisors (8150507).

165211093 is a wasteful number, since it uses less digits than its factorization.

165211093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40331.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 165211093 is about 12853.4467361871. The cubic root of 165211093 is about 548.7144554198.

The spelling of 165211093 in words is "one hundred sixty-five million, two hundred eleven thousand, ninety-three".