195844087 has 2 divisors, whose sum is σ = 195844088. Its totient is φ = 195844086.

The previous prime is 195844031. The next prime is 195844091. The reversal of 195844087 is 780448591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195844087 - 2⁷ = 195843959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195844687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97922043 + 97922044.

It is an arithmetic number, because the mean of its divisors is an integer number (97922044).

Almost surely, 2^195844087 is an apocalyptic number.

195844087 is a deficient number, since it is larger than the sum of its proper divisors (1).

195844087 is an equidigital number, since it uses as much as digits as its factorization.

195844087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 195844087 is about 13994.4305707664. The cubic root of 195844087 is about 580.7245078018.

The spelling of 195844087 in words is "one hundred ninety-five million, eight hundred forty-four thousand, eighty-seven".