195820133 has 2 divisors, whose sum is σ = 195820134. Its totient is φ = 195820132.

The previous prime is 195820117. The next prime is 195820139. The reversal of 195820133 is 331028591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195077089 + 743044 = 13967^2 + 862^2 .

It is a cyclic number.

It is not a de Polignac number, because 195820133 - 2⁴ = 195820117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195820133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195820139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97910066 + 97910067.

It is an arithmetic number, because the mean of its divisors is an integer number (97910067).

Almost surely, 2^195820133 is an apocalyptic number.

It is an amenable number.

195820133 is a deficient number, since it is larger than the sum of its proper divisors (1).

195820133 is an equidigital number, since it uses as much as digits as its factorization.

195820133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 195820133 is about 13993.5747041276. The cubic root of 195820133 is about 580.7008303921.

The spelling of 195820133 in words is "one hundred ninety-five million, eight hundred twenty thousand, one hundred thirty-three".