165001608 has 48 divisors (see below), whose sum is σ = 453015420. Its totient is φ = 54245376.

The previous prime is 165001601. The next prime is 165001649. The reversal of 165001608 is 806100561.

165001608 is a `hidden beast` number, since 1 + 6 + 50 + 0 + 1 + 608 = 666.

165001608 is nontrivially palindromic in base 5.

165001608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 142134084 + 22867524 = 11922^2 + 4782^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165001601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10441 + ... + 20952.

Almost surely, 2^165001608 is an apocalyptic number.

165001608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

165001608 is an abundant number, since it is smaller than the sum of its proper divisors (288013812).

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

165001608 is a wasteful number, since it uses less digits than its factorization.

165001608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31478 (or 31471 counting only the distinct ones).

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

The square root of 165001608 is about 12845.2951698277. The cubic root of 165001608 is about 548.4824369686.

The spelling of 165001608 in words is "one hundred sixty-five million, one thousand, six hundred eight".