193648129 has 2 divisors, whose sum is σ = 193648130. Its totient is φ = 193648128.

The previous prime is 193648123. The next prime is 193648151. The reversal of 193648129 is 921846391.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146410000 + 47238129 = 12100^2 + 6873^2 .

It is a cyclic number.

It is not a de Polignac number, because 193648129 - 2⁵ = 193648097 is a prime.

It is not a weakly prime, because it can be changed into another prime (193648123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96824064 + 96824065.

It is an arithmetic number, because the mean of its divisors is an integer number (96824065).

Almost surely, 2^193648129 is an apocalyptic number.

It is an amenable number.

193648129 is a deficient number, since it is larger than the sum of its proper divisors (1).

193648129 is an equidigital number, since it uses as much as digits as its factorization.

193648129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 193648129 is about 13915.7511116001. The cubic root of 193648129 is about 578.5458310127.

The spelling of 193648129 in words is "one hundred ninety-three million, six hundred forty-eight thousand, one hundred twenty-nine".