195135966 has 40 divisors (see below), whose sum is σ = 460269480. Its totient is φ = 61620912.

The previous prime is 195135953. The next prime is 195135991. The reversal of 195135966 is 669531591.

195135966 is a `hidden beast` number, since 1 + 9 + 51 + 3 + 596 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28621 + ... + 34776.

It is an arithmetic number, because the mean of its divisors is an integer number (11506737).

Almost surely, 2^195135966 is an apocalyptic number.

195135966 is an abundant number, since it is smaller than the sum of its proper divisors (265133514).

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

195135966 is a wasteful number, since it uses less digits than its factorization.

195135966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63430 (or 63421 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The square root of 195135966 is about 13969.1075591822. The cubic root of 195135966 is about 580.0237465505.

It can be divided in two parts, 195 and 135966, that added together give a square (136161 = 369²).

The spelling of 195135966 in words is "one hundred ninety-five million, one hundred thirty-five thousand, nine hundred sixty-six".