165653928 has 48 divisors (see below), whose sum is σ = 489434400. Its totient is φ = 50197920.

The previous prime is 165653927. The next prime is 165653947. The reversal of 165653928 is 829356561.

It is not an unprimeable number, because it can be changed into a prime (165653923) 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 11 ways as a sum of consecutive naturals, for example, 103788 + ... + 105371.

It is an arithmetic number, because the mean of its divisors is an integer number (10196550).

Almost surely, 2^165653928 is an apocalyptic number.

165653928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

165653928 is an abundant number, since it is smaller than the sum of its proper divisors (323780472).

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

165653928 is a wasteful number, since it uses less digits than its factorization.

165653928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209182 (or 209175 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 165653928 is about 12870.6615214603. The cubic root of 165653928 is about 549.2042796384.

The spelling of 165653928 in words is "one hundred sixty-five million, six hundred fifty-three thousand, nine hundred twenty-eight".