20164193 has 16 divisors (see below), whose sum is σ = 25246080. Its totient is φ = 15703296.

The previous prime is 20164163. The next prime is 20164219. The reversal of 20164193 is 39146102.

It is not a de Polignac number, because 20164193 - 2²⁰ = 19115617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20164163) 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 15 ways as a sum of consecutive naturals, for example, 530 + ... + 6372.

It is an arithmetic number, because the mean of its divisors is an integer number (1577880).

Almost surely, 2^20164193 is an apocalyptic number.

It is an amenable number.

20164193 is a deficient number, since it is larger than the sum of its proper divisors (5081887).

20164193 is a wasteful number, since it uses less digits than its factorization.

20164193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5896.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20164193 is about 4490.4557675140. The cubic root of 20164193 is about 272.1825520856.

The spelling of 20164193 in words is "twenty million, one hundred sixty-four thousand, one hundred ninety-three".