195144861 has 8 divisors (see below), whose sum is σ = 260919360. Its totient is φ = 129733472.

The previous prime is 195144821. The next prime is 195144889. The reversal of 195144861 is 168441591.

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

It is a cyclic number.

It is not a de Polignac number, because 195144861 - 2⁶ = 195144797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195144821) 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, 89520 + ... + 91673.

It is an arithmetic number, because the mean of its divisors is an integer number (32614920).

Almost surely, 2^195144861 is an apocalyptic number.

It is an amenable number.

195144861 is a deficient number, since it is larger than the sum of its proper divisors (65774499).

195144861 is a wasteful number, since it uses less digits than its factorization.

195144861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181555.

The product of its digits is 34560, while the sum is 39.

The square root of 195144861 is about 13969.4259366661. The cubic root of 195144861 is about 580.0325596070.

The spelling of 195144861 in words is "one hundred ninety-five million, one hundred forty-four thousand, eight hundred sixty-one".