197395901 has 2 divisors, whose sum is σ = 197395902. Its totient is φ = 197395900.

The previous prime is 197395831. The next prime is 197395937. The reversal of 197395901 is 109593791.

197395901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99900025 + 97495876 = 9995^2 + 9874^2 .

It is an emirp because it is prime and its reverse (109593791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197395901 - 2¹⁸ = 197133757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197395951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98697950 + 98697951.

It is an arithmetic number, because the mean of its divisors is an integer number (98697951).

Almost surely, 2^197395901 is an apocalyptic number.

It is an amenable number.

197395901 is a deficient number, since it is larger than the sum of its proper divisors (1).

197395901 is an equidigital number, since it uses as much as digits as its factorization.

197395901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76545, while the sum is 44.

The square root of 197395901 is about 14049.7651581797. The cubic root of 197395901 is about 582.2543074064.

The spelling of 197395901 in words is "one hundred ninety-seven million, three hundred ninety-five thousand, nine hundred one".