195042213 has 6 divisors (see below), whose sum is σ = 281727654. Its totient is φ = 130028136.

The previous prime is 195042179. The next prime is 195042217. The reversal of 195042213 is 312240591.

It can be written as a sum of positive squares in only one way, i.e., 160959969 + 34082244 = 12687^2 + 5838^2 .

It is not a de Polignac number, because 195042213 - 2⁹ = 195041701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195042217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10835670 + ... + 10835687.

It is an arithmetic number, because the mean of its divisors is an integer number (46954609).

Almost surely, 2^195042213 is an apocalyptic number.

It is an amenable number.

195042213 is a deficient number, since it is larger than the sum of its proper divisors (86685441).

195042213 is a wasteful number, since it uses less digits than its factorization.

195042213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21671363 (or 21671360 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 195042213 is about 13965.7514298372. The cubic root of 195042213 is about 579.9308409413.

The spelling of 195042213 in words is "one hundred ninety-five million, forty-two thousand, two hundred thirteen".