193149317 has 2 divisors, whose sum is σ = 193149318. Its totient is φ = 193149316.

The previous prime is 193149301. The next prime is 193149343. The reversal of 193149317 is 713941391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191711716 + 1437601 = 13846^2 + 1199^2 .

It is a cyclic number.

It is not a de Polignac number, because 193149317 - 2⁴ = 193149301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193149917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96574658 + 96574659.

It is an arithmetic number, because the mean of its divisors is an integer number (96574659).

Almost surely, 2^193149317 is an apocalyptic number.

It is an amenable number.

193149317 is a deficient number, since it is larger than the sum of its proper divisors (1).

193149317 is an equidigital number, since it uses as much as digits as its factorization.

193149317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 193149317 is about 13897.8169868508. The cubic root of 193149317 is about 578.0486513328.

The spelling of 193149317 in words is "one hundred ninety-three million, one hundred forty-nine thousand, three hundred seventeen".