20000195 has 4 divisors (see below), whose sum is σ = 24000240. Its totient is φ = 16000152.

The previous prime is 20000171. The next prime is 20000213. The reversal of 20000195 is 59100002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20000195 - 2¹² = 19996099 is a prime.

20000195 is a modest number, since divided by 195 gives 20 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000015 + ... + 2000024.

It is an arithmetic number, because the mean of its divisors is an integer number (6000060).

Almost surely, 2^20000195 is an apocalyptic number.

20000195 is a deficient number, since it is larger than the sum of its proper divisors (4000045).

20000195 is an equidigital number, since it uses as much as digits as its factorization.

20000195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000044.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 20000195 is about 4472.1577566092. The cubic root of 20000195 is about 271.4426438423.

Adding to 20000195 its reverse (59100002), we get a palindrome (79100197).

The spelling of 20000195 in words is "twenty million, one hundred ninety-five", and thus it is an aban number.