20146195 has 4 divisors (see below), whose sum is σ = 24175440. Its totient is φ = 16116952.

The previous prime is 20146177. The next prime is 20146219. The reversal of 20146195 is 59164102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59164102 = 2 ⋅29582051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20146195 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 2014615 + ... + 2014624.

It is an arithmetic number, because the mean of its divisors is an integer number (6043860).

Almost surely, 2^20146195 is an apocalyptic number.

20146195 is a deficient number, since it is larger than the sum of its proper divisors (4029245).

20146195 is an equidigital number, since it uses as much as digits as its factorization.

20146195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029244.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 20146195 is about 4488.4512919269. The cubic root of 20146195 is about 272.1015471116.

The spelling of 20146195 in words is "twenty million, one hundred forty-six thousand, one hundred ninety-five".