165093865 has 8 divisors (see below), whose sum is σ = 198182088. Its totient is φ = 132028800.

The previous prime is 165093847. The next prime is 165093871. The reversal of 165093865 is 568390561.

It can be written as a sum of positive squares in 4 ways, for example, as 8743849 + 156350016 = 2957^2 + 12504^2 .

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

It is not a de Polignac number, because 165093865 - 2⁷ = 165093737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22269 + ... + 28741.

It is an arithmetic number, because the mean of its divisors is an integer number (24772761).

Almost surely, 2^165093865 is an apocalyptic number.

It is an amenable number.

165093865 is a deficient number, since it is larger than the sum of its proper divisors (33088223).

165093865 is an equidigital number, since it uses as much as digits as its factorization.

165093865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11579.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 165093865 is about 12848.8857493559. The cubic root of 165093865 is about 548.5846418639.

The spelling of 165093865 in words is "one hundred sixty-five million, ninety-three thousand, eight hundred sixty-five".