193898197 has 2 divisors, whose sum is σ = 193898198. Its totient is φ = 193898196.

The previous prime is 193898191. The next prime is 193898203. The reversal of 193898197 is 791898391.

It is a balanced prime because it is at equal distance from previous prime (193898191) and next prime (193898203).

It can be written as a sum of positive squares in only one way, i.e., 173159281 + 20738916 = 13159^2 + 4554^2 .

It is an emirp because it is prime and its reverse (791898391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 193898197 - 2¹¹ = 193896149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193898191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96949098 + 96949099.

It is an arithmetic number, because the mean of its divisors is an integer number (96949099).

Almost surely, 2^193898197 is an apocalyptic number.

It is an amenable number.

193898197 is a deficient number, since it is larger than the sum of its proper divisors (1).

193898197 is an equidigital number, since it uses as much as digits as its factorization.

193898197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 55.

The square root of 193898197 is about 13924.7332829035. The cubic root of 193898197 is about 578.7947594316.

The spelling of 193898197 in words is "one hundred ninety-three million, eight hundred ninety-eight thousand, one hundred ninety-seven".