195312947 has 2 divisors, whose sum is σ = 195312948. Its totient is φ = 195312946.

The previous prime is 195312917. The next prime is 195312959. The reversal of 195312947 is 749213591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195312947 - 2¹⁶ = 195247411 is a prime.

It is not a weakly prime, because it can be changed into another prime (195312917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97656473 + 97656474.

It is an arithmetic number, because the mean of its divisors is an integer number (97656474).

Almost surely, 2^195312947 is an apocalyptic number.

195312947 is a deficient number, since it is larger than the sum of its proper divisors (1).

195312947 is an equidigital number, since it uses as much as digits as its factorization.

195312947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 195312947 is about 13975.4408517227. The cubic root of 195312947 is about 580.1990468232.

The spelling of 195312947 in words is "one hundred ninety-five million, three hundred twelve thousand, nine hundred forty-seven".