196148089 has 2 divisors, whose sum is σ = 196148090. Its totient is φ = 196148088.

The previous prime is 196148087. The next prime is 196148111. The reversal of 196148089 is 980841691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170746489 + 25401600 = 13067^2 + 5040^2 .

It is a cyclic number.

It is not a de Polignac number, because 196148089 - 2¹ = 196148087 is a prime.

Together with 196148087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (196148081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98074044 + 98074045.

It is an arithmetic number, because the mean of its divisors is an integer number (98074045).

Almost surely, 2^196148089 is an apocalyptic number.

It is an amenable number.

196148089 is a deficient number, since it is larger than the sum of its proper divisors (1).

196148089 is an equidigital number, since it uses as much as digits as its factorization.

196148089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 196148089 is about 14005.2878942205. The cubic root of 196148089 is about 581.0248319812.

The spelling of 196148089 in words is "one hundred ninety-six million, one hundred forty-eight thousand, eighty-nine".