195900071236 has 9 divisors (see below), whose sum is σ = 342826673791. Its totient is φ = 97949593012.

The previous prime is 195900071231. The next prime is 195900071239. The reversal of 195900071236 is 632170009591.

The square root of 195900071236 is 442606.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195900071192 and 195900071201.

It is not an unprimeable number, because it can be changed into a prime (195900071231) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 774561 + ... + 995863.

Almost surely, 2^195900071236 is an apocalyptic number.

195900071236 is the 442606-th square number.

It is an amenable number.

195900071236 is a deficient number, since it is larger than the sum of its proper divisors (146926602555).

195900071236 is an frugal number, since it uses more digits than its factorization.

195900071236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442610 (or 221305 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The spelling of 195900071236 in words is "one hundred ninety-five billion, nine hundred million, seventy-one thousand, two hundred thirty-six".