165273906 has 32 divisors (see below), whose sum is σ = 394195968. Its totient is φ = 45167760.

The previous prime is 165273859. The next prime is 165273917. The reversal of 165273906 is 609372561.

165273906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84580 + ... + 86511.

It is an arithmetic number, because the mean of its divisors is an integer number (12318624).

Almost surely, 2^165273906 is an apocalyptic number.

165273906 is an abundant number, since it is smaller than the sum of its proper divisors (228922062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165273906 is a wasteful number, since it uses less digits than its factorization.

165273906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171126.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 165273906 is about 12855.8899341897. The cubic root of 165273906 is about 548.7839867355.

The spelling of 165273906 in words is "one hundred sixty-five million, two hundred seventy-three thousand, nine hundred six".