193690829 has 2 divisors, whose sum is σ = 193690830. Its totient is φ = 193690828.

The previous prime is 193690823. The next prime is 193690841. The reversal of 193690829 is 928096391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111788329 + 81902500 = 10573^2 + 9050^2 .

It is a cyclic number.

It is not a de Polignac number, because 193690829 - 2⁴ = 193690813 is a prime.

It is a super-2 number, since 2×193690829² = 75032274477414482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193690823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96845414 + 96845415.

It is an arithmetic number, because the mean of its divisors is an integer number (96845415).

Almost surely, 2^193690829 is an apocalyptic number.

It is an amenable number.

193690829 is a deficient number, since it is larger than the sum of its proper divisors (1).

193690829 is an equidigital number, since it uses as much as digits as its factorization.

193690829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 193690829 is about 13917.2852597049. The cubic root of 193690829 is about 578.5883515913.

The spelling of 193690829 in words is "one hundred ninety-three million, six hundred ninety thousand, eight hundred twenty-nine".