195881995 has 16 divisors (see below), whose sum is σ = 238982112. Its totient is φ = 154103040.

The previous prime is 195881989. The next prime is 195881999. The reversal of 195881995 is 599188591.

It is not a de Polignac number, because 195881995 - 2⁷ = 195881867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195881999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178669 + ... + 179761.

It is an arithmetic number, because the mean of its divisors is an integer number (14936382).

Almost surely, 2^195881995 is an apocalyptic number.

195881995 is a deficient number, since it is larger than the sum of its proper divisors (43100117).

195881995 is a wasteful number, since it uses less digits than its factorization.

195881995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662.

The product of its digits is 1166400, while the sum is 55.

The square root of 195881995 is about 13995.7849011765. The cubic root of 195881995 is about 580.7619741435.

The spelling of 195881995 in words is "one hundred ninety-five million, eight hundred eighty-one thousand, nine hundred ninety-five".