165020364 has 18 divisors (see below), whose sum is σ = 417134900. Its totient is φ = 55006776.

The previous prime is 165020363. The next prime is 165020389. The reversal of 165020364 is 463020561.

165020364 is a `hidden beast` number, since 1 + 650 + 2 + 0 + 3 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (165020363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2291914 + ... + 2291985.

Almost surely, 2^165020364 is an apocalyptic number.

It is an amenable number.

165020364 is an abundant number, since it is smaller than the sum of its proper divisors (252114536).

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

165020364 is a wasteful number, since it uses less digits than its factorization.

165020364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583909 (or 4583904 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 165020364 is about 12846.0252218342. The cubic root of 165020364 is about 548.5032184768.

The spelling of 165020364 in words is "one hundred sixty-five million, twenty thousand, three hundred sixty-four".