20195683 has 2 divisors, whose sum is σ = 20195684. Its totient is φ = 20195682.

The previous prime is 20195671. The next prime is 20195701. The reversal of 20195683 is 38659102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20195683 is a prime.

It is a super-2 number, since 2×20195683² = 815731223672978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20195603) by changing a digit.

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 as a sum of consecutive naturals, namely, 10097841 + 10097842.

It is an arithmetic number, because the mean of its divisors is an integer number (10097842).

Almost surely, 2^20195683 is an apocalyptic number.

20195683 is a deficient number, since it is larger than the sum of its proper divisors (1).

20195683 is an equidigital number, since it uses as much as digits as its factorization.

20195683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 20195683 is about 4493.9607252400. The cubic root of 20195683 is about 272.3241656660.

The spelling of 20195683 in words is "twenty million, one hundred ninety-five thousand, six hundred eighty-three".