197395873 has 4 divisors (see below), whose sum is σ = 199430980. Its totient is φ = 195360768.

The previous prime is 197395831. The next prime is 197395901. The reversal of 197395873 is 378593791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49238289 + 148157584 = 7017^2 + 12172^2 .

It is a cyclic number.

It is not a de Polignac number, because 197395873 - 2¹³ = 197387681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197395873.

It is not an unprimeable number, because it can be changed into a prime (197395813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017408 + ... + 1017601.

It is an arithmetic number, because the mean of its divisors is an integer number (49857745).

Almost surely, 2^197395873 is an apocalyptic number.

It is an amenable number.

197395873 is a deficient number, since it is larger than the sum of its proper divisors (2035107).

197395873 is an equidigital number, since it uses as much as digits as its factorization.

197395873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035106.

The product of its digits is 1428840, while the sum is 52.

The square root of 197395873 is about 14049.7641617217. The cubic root of 197395873 is about 582.2542798761.

The spelling of 197395873 in words is "one hundred ninety-seven million, three hundred ninety-five thousand, eight hundred seventy-three".