193897133 has 2 divisors, whose sum is σ = 193897134. Its totient is φ = 193897132.

The previous prime is 193897111. The next prime is 193897163. The reversal of 193897133 is 331798391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112933129 + 80964004 = 10627^2 + 8998^2 .

It is a cyclic number.

It is not a de Polignac number, because 193897133 - 2¹⁴ = 193880749 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 (193897163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96948566 + 96948567.

It is an arithmetic number, because the mean of its divisors is an integer number (96948567).

Almost surely, 2^193897133 is an apocalyptic number.

It is an amenable number.

193897133 is a deficient number, since it is larger than the sum of its proper divisors (1).

193897133 is an equidigital number, since it uses as much as digits as its factorization.

193897133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 193897133 is about 13924.6950774514. The cubic root of 193897133 is about 578.7937007338.

The spelling of 193897133 in words is "one hundred ninety-three million, eight hundred ninety-seven thousand, one hundred thirty-three".