195091617 has 8 divisors (see below), whose sum is σ = 297282496. Its totient is φ = 111480912.

The previous prime is 195091607. The next prime is 195091657. The reversal of 195091617 is 716190591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 195091617 - 2⁶ = 195091553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195091607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4645018 + ... + 4645059.

It is an arithmetic number, because the mean of its divisors is an integer number (37160312).

Almost surely, 2^195091617 is an apocalyptic number.

It is an amenable number.

195091617 is a deficient number, since it is larger than the sum of its proper divisors (102190879).

195091617 is an equidigital number, since it uses as much as digits as its factorization.

195091617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9290087.

The product of its (nonzero) digits is 17010, while the sum is 39.

The square root of 195091617 is about 13967.5200733702. The cubic root of 195091617 is about 579.9798021107.

The spelling of 195091617 in words is "one hundred ninety-five million, ninety-one thousand, six hundred seventeen".