195915651 has 8 divisors (see below), whose sum is σ = 262575120. Its totient is φ = 129933312.

The previous prime is 195915649. The next prime is 195915689. The reversal of 195915651 is 156519591.

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

It is not a de Polignac number, because 195915651 - 2¹ = 195915649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195915641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168606 + ... + 169763.

It is an arithmetic number, because the mean of its divisors is an integer number (32821890).

Almost surely, 2^195915651 is an apocalyptic number.

195915651 is a deficient number, since it is larger than the sum of its proper divisors (66659469).

195915651 is a wasteful number, since it uses less digits than its factorization.

195915651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338565.

The product of its digits is 60750, while the sum is 42.

The square root of 195915651 is about 13996.9872115395. The cubic root of 195915651 is about 580.7952339736.

The spelling of 195915651 in words is "one hundred ninety-five million, nine hundred fifteen thousand, six hundred fifty-one".