16020165 has 32 divisors (see below), whose sum is σ = 29454336. Its totient is φ = 7283520.

The previous prime is 16020163. The next prime is 16020197. The reversal of 16020165 is 56102061.

It is a happy number.

It is not a de Polignac number, because 16020165 - 2¹ = 16020163 is a prime.

It is a super-4 number, since 4×16020165⁴ (a number of 30 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16020163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28174 + ... + 28736.

It is an arithmetic number, because the mean of its divisors is an integer number (920448).

Almost surely, 2^16020165 is an apocalyptic number.

16020165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16020165 is a deficient number, since it is larger than the sum of its proper divisors (13434171).

16020165 is a wasteful number, since it uses less digits than its factorization.

16020165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 16020165 is about 4002.5198313063. The cubic root of 16020165 is about 252.0900251546.

The spelling of 16020165 in words is "sixteen million, twenty thousand, one hundred sixty-five".