135830197 has 2 divisors, whose sum is σ = 135830198. Its totient is φ = 135830196.

The previous prime is 135830179. The next prime is 135830237. The reversal of 135830197 is 791038531.

It is a happy number.

Together with previous prime (135830179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103408561 + 32421636 = 10169^2 + 5694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135830197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135830797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67915098 + 67915099.

It is an arithmetic number, because the mean of its divisors is an integer number (67915099).

Almost surely, 2^135830197 is an apocalyptic number.

It is an amenable number.

135830197 is a deficient number, since it is larger than the sum of its proper divisors (1).

135830197 is an equidigital number, since it uses as much as digits as its factorization.

135830197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 135830197 is about 11654.6212722679. The cubic root of 135830197 is about 514.0422038352.

The spelling of 135830197 in words is "one hundred thirty-five million, eight hundred thirty thousand, one hundred ninety-seven".