165411128 has 32 divisors (see below), whose sum is σ = 324486000. Its totient is φ = 78946560.

The previous prime is 165411121. The next prime is 165411137. The reversal of 165411128 is 821114561.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 165411128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165411121) 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, 16643 + ... + 24653.

Almost surely, 2^165411128 is an apocalyptic number.

It is an amenable number.

165411128 is a deficient number, since it is larger than the sum of its proper divisors (159074872).

165411128 is a wasteful number, since it uses less digits than its factorization.

165411128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8135 (or 8131 counting only the distinct ones).

The product of its digits is 1920, while the sum is 29.

The square root of 165411128 is about 12861.2257580683. The cubic root of 165411128 is about 548.9358243858.

Adding to 165411128 its reverse (821114561), we get a palindrome (986525689).

The spelling of 165411128 in words is "one hundred sixty-five million, four hundred eleven thousand, one hundred twenty-eight".