195131563 has 16 divisors (see below), whose sum is σ = 223911936. Its totient is φ = 168315840.

The previous prime is 195131557. The next prime is 195131581. The reversal of 195131563 is 365131591.

It is a happy number.

It is not a de Polignac number, because 195131563 - 2¹³ = 195123371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195131533) 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, 29095 + ... + 35167.

It is an arithmetic number, because the mean of its divisors is an integer number (13994496).

Almost surely, 2^195131563 is an apocalyptic number.

195131563 is a deficient number, since it is larger than the sum of its proper divisors (28780373).

195131563 is a wasteful number, since it uses less digits than its factorization.

195131563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6234.

The product of its digits is 12150, while the sum is 34.

The square root of 195131563 is about 13968.9499605375. The cubic root of 195131563 is about 580.0193840133.

The spelling of 195131563 in words is "one hundred ninety-five million, one hundred thirty-one thousand, five hundred sixty-three".