195986555 has 8 divisors (see below), whose sum is σ = 235403712. Its totient is φ = 156642688.

The previous prime is 195986533. The next prime is 195986587. The reversal of 195986555 is 555689591.

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 195986555 - 2⁶ = 195986491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195986497 and 195986506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12254 + ... + 23283.

It is an arithmetic number, because the mean of its divisors is an integer number (29425464).

Almost surely, 2^195986555 is an apocalyptic number.

195986555 is a deficient number, since it is larger than the sum of its proper divisors (39417157).

195986555 is a wasteful number, since it uses less digits than its factorization.

195986555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36645.

The product of its digits is 2430000, while the sum is 53.

The square root of 195986555 is about 13999.5198131936. The cubic root of 195986555 is about 580.8652908887.

The spelling of 195986555 in words is "one hundred ninety-five million, nine hundred eighty-six thousand, five hundred fifty-five".