165168153 has 10 divisors (see below), whose sum is σ = 246732794. Its totient is φ = 110112048.

The previous prime is 165168119. The next prime is 165168161. The reversal of 165168153 is 351861561.

165168153 is a `hidden beast` number, since 16 + 516 + 81 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 161493264 + 3674889 = 12708^2 + 1917^2 .

It is not a de Polignac number, because 165168153 - 2⁸ = 165167897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165168173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1019476 + ... + 1019637.

Almost surely, 2^165168153 is an apocalyptic number.

It is an amenable number.

165168153 is a deficient number, since it is larger than the sum of its proper divisors (81564641).

165168153 is an equidigital number, since it uses as much as digits as its factorization.

165168153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039125 (or 2039116 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 165168153 is about 12851.7762585566. The cubic root of 165168153 is about 548.6669125261. Note that the first 3 decimals are identical.

The spelling of 165168153 in words is "one hundred sixty-five million, one hundred sixty-eight thousand, one hundred fifty-three".