195390066 has 32 divisors (see below), whose sum is σ = 396645120. Its totient is φ = 64158336.

The previous prime is 195390049. The next prime is 195390077. The reversal of 195390066 is 660093591.

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, 195480 + ... + 196476.

It is an arithmetic number, because the mean of its divisors is an integer number (12395160).

Almost surely, 2^195390066 is an apocalyptic number.

195390066 is an abundant number, since it is smaller than the sum of its proper divisors (201255054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195390066 is a wasteful number, since it uses less digits than its factorization.

195390066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 195390066 is about 13978.1996694853. The cubic root of 195390066 is about 580.2754003252.

The spelling of 195390066 in words is "one hundred ninety-five million, three hundred ninety thousand, sixty-six".