195612189 has 8 divisors (see below), whose sum is σ = 267177792. Its totient is φ = 127227360.

The previous prime is 195612181. The next prime is 195612191. The reversal of 195612189 is 981216591.

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

It is not a de Polignac number, because 195612189 - 2³ = 195612181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195612189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195612181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795049 + ... + 795294.

It is an arithmetic number, because the mean of its divisors is an integer number (33397224).

Almost surely, 2^195612189 is an apocalyptic number.

It is an amenable number.

195612189 is a deficient number, since it is larger than the sum of its proper divisors (71565603).

195612189 is a wasteful number, since it uses less digits than its factorization.

195612189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590387.

The product of its digits is 38880, while the sum is 42.

The square root of 195612189 is about 13986.1427491643. The cubic root of 195612189 is about 580.4952062819.

The spelling of 195612189 in words is "one hundred ninety-five million, six hundred twelve thousand, one hundred eighty-nine".