195826861 has 2 divisors, whose sum is σ = 195826862. Its totient is φ = 195826860.

The previous prime is 195826847. The next prime is 195826909. The reversal of 195826861 is 168628591.

195826861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190605636 + 5221225 = 13806^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 195826861 - 2¹¹ = 195824813 is a prime.

It is a super-2 number, since 2×195826861² = 76696318978226642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195826811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97913430 + 97913431.

It is an arithmetic number, because the mean of its divisors is an integer number (97913431).

Almost surely, 2^195826861 is an apocalyptic number.

It is an amenable number.

195826861 is a deficient number, since it is larger than the sum of its proper divisors (1).

195826861 is an equidigital number, since it uses as much as digits as its factorization.

195826861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 46.

The square root of 195826861 is about 13993.8150981067. The cubic root of 195826861 is about 580.7074809007.

The spelling of 195826861 in words is "one hundred ninety-five million, eight hundred twenty-six thousand, eight hundred sixty-one".