195587381191 has 16 divisors (see below), whose sum is σ = 205850108160. Its totient is φ = 185576751360.

The previous prime is 195587381161. The next prime is 195587381201. The reversal of 195587381191 is 191183785591.

It is a cyclic number.

It is not a de Polignac number, because 195587381191 - 2⁵ = 195587381159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195587381111) 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, 2346315 + ... + 2428243.

It is an arithmetic number, because the mean of its divisors is an integer number (12865631760).

Almost surely, 2^195587381191 is an apocalyptic number.

195587381191 is a deficient number, since it is larger than the sum of its proper divisors (10262726969).

195587381191 is a wasteful number, since it uses less digits than its factorization.

195587381191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83466.

The product of its digits is 2721600, while the sum is 58.

The spelling of 195587381191 in words is "one hundred ninety-five billion, five hundred eighty-seven million, three hundred eighty-one thousand, one hundred ninety-one".