195915605 has 4 divisors (see below), whose sum is σ = 235098732. Its totient is φ = 156732480.

The previous prime is 195915583. The next prime is 195915637. The reversal of 195915605 is 506519591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75047569 + 120868036 = 8663^2 + 10994^2 .

It is not a de Polignac number, because 195915605 - 2¹² = 195911509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19591556 + ... + 19591565.

It is an arithmetic number, because the mean of its divisors is an integer number (58774683).

Almost surely, 2^195915605 is an apocalyptic number.

It is an amenable number.

195915605 is a deficient number, since it is larger than the sum of its proper divisors (39183127).

195915605 is an equidigital number, since it uses as much as digits as its factorization.

195915605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39183126.

The product of its (nonzero) digits is 60750, while the sum is 41.

The square root of 195915605 is about 13996.9855683286. The cubic root of 195915605 is about 580.7951885177.

The spelling of 195915605 in words is "one hundred ninety-five million, nine hundred fifteen thousand, six hundred five".