193009 has 2 divisors, whose sum is σ = 193010. Its totient is φ = 193008.

The previous prime is 193003. The next prime is 193013. The reversal of 193009 is 900391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119025 + 73984 = 345^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 193009 - 2⁵ = 192977 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (193003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96504 + 96505.

It is an arithmetic number, because the mean of its divisors is an integer number (96505).

2¹⁹³⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

193009 is a deficient number, since it is larger than the sum of its proper divisors (1).

193009 is an equidigital number, since it uses as much as digits as its factorization.

193009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 193009 is about 439.3278957681. The cubic root of 193009 is about 57.7908639272.

The spelling of 193009 in words is "one hundred ninety-three thousand, nine".