20196165 has 16 divisors (see below), whose sum is σ = 35251776. Its totient is φ = 9792000.

The previous prime is 20196109. The next prime is 20196173. The reversal of 20196165 is 56169102.

It is not a de Polignac number, because 20196165 - 2⁶ = 20196101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61036 + ... + 61365.

It is an arithmetic number, because the mean of its divisors is an integer number (2203236).

Almost surely, 2^20196165 is an apocalyptic number.

It is an amenable number.

20196165 is a deficient number, since it is larger than the sum of its proper divisors (15055611).

20196165 is a wasteful number, since it uses less digits than its factorization.

20196165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122420.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20196165 is about 4494.0143524470. The cubic root of 20196165 is about 272.3263321225.

The spelling of 20196165 in words is "twenty million, one hundred ninety-six thousand, one hundred sixty-five".