196175989 has 2 divisors, whose sum is σ = 196175990. Its totient is φ = 196175988.

The previous prime is 196175977. The next prime is 196176049. The reversal of 196175989 is 989571691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169859089 + 26316900 = 13033^2 + 5130^2 .

It is an emirp because it is prime and its reverse (989571691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196175989 - 2²¹ = 194078837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196176989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98087994 + 98087995.

It is an arithmetic number, because the mean of its divisors is an integer number (98087995).

Almost surely, 2^196175989 is an apocalyptic number.

It is an amenable number.

196175989 is a deficient number, since it is larger than the sum of its proper divisors (1).

196175989 is an equidigital number, since it uses as much as digits as its factorization.

196175989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 55.

The square root of 196175989 is about 14006.2839111593. The cubic root of 196175989 is about 581.0523788963.

The spelling of 196175989 in words is "one hundred ninety-six million, one hundred seventy-five thousand, nine hundred eighty-nine".