195787223 has 2 divisors, whose sum is σ = 195787224. Its totient is φ = 195787222.

The previous prime is 195787211. The next prime is 195787253. The reversal of 195787223 is 322787591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195787223 - 2⁶ = 195787159 is a prime.

It is equal to p_10858679 and since 195787223 and 10858679 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195787253) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97893611 + 97893612.

It is an arithmetic number, because the mean of its divisors is an integer number (97893612).

Almost surely, 2^195787223 is an apocalyptic number.

195787223 is a deficient number, since it is larger than the sum of its proper divisors (1).

195787223 is an equidigital number, since it uses as much as digits as its factorization.

195787223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The square root of 195787223 is about 13992.3987578971. The cubic root of 195787223 is about 580.6682972460.

The spelling of 195787223 in words is "one hundred ninety-five million, seven hundred eighty-seven thousand, two hundred twenty-three".