165144644 has 12 divisors (see below), whose sum is σ = 330289344. Its totient is φ = 70776264.

The previous prime is 165144643. The next prime is 165144659. The reversal of 165144644 is 446441561.

165144644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

165144644 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (165144643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2948984 + ... + 2949039.

It is an arithmetic number, because the mean of its divisors is an integer number (27524112).

Almost surely, 2^165144644 is an apocalyptic number.

165144644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

165144644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

165144644 is a wasteful number, since it uses less digits than its factorization.

165144644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5898034 (or 5898032 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 165144644 is about 12850.8616053555. The cubic root of 165144644 is about 548.6408800208.

The spelling of 165144644 in words is "one hundred sixty-five million, one hundred forty-four thousand, six hundred forty-four".