195196091 has 6 divisors (see below), whose sum is σ = 207353940. Its totient is φ = 183713696.

The previous prime is 195196081. The next prime is 195196097. The reversal of 195196091 is 190691591.

It is not a de Polignac number, because 195196091 - 2¹⁴ = 195179707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195196097) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 337421 + ... + 337998.

It is an arithmetic number, because the mean of its divisors is an integer number (34558990).

Almost surely, 2^195196091 is an apocalyptic number.

195196091 is a deficient number, since it is larger than the sum of its proper divisors (12157849).

195196091 is an equidigital number, since it uses as much as digits as its factorization.

195196091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675453 (or 675436 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 41.

The square root of 195196091 is about 13971.2594636275. The cubic root of 195196091 is about 580.0833124476.

The spelling of 195196091 in words is "one hundred ninety-five million, one hundred ninety-six thousand, ninety-one".