195545665 has 16 divisors (see below), whose sum is σ = 270230400. Its totient is φ = 133061760.

The previous prime is 195545653. The next prime is 195545677. The reversal of 195545665 is 566545591.

195545665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (195545653) and next prime (195545677).

It is not a de Polignac number, because 195545665 - 2⁵ = 195545633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16740 + ... + 25909.

It is an arithmetic number, because the mean of its divisors is an integer number (16889400).

Almost surely, 2^195545665 is an apocalyptic number.

It is an amenable number.

195545665 is a deficient number, since it is larger than the sum of its proper divisors (74684735).

195545665 is a wasteful number, since it uses less digits than its factorization.

195545665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42792.

The product of its digits is 810000, while the sum is 46.

The square root of 195545665 is about 13983.7643358289. The cubic root of 195545665 is about 580.4293936796.

The spelling of 195545665 in words is "one hundred ninety-five million, five hundred forty-five thousand, six hundred sixty-five".