194141729 has 2 divisors, whose sum is σ = 194141730. Its totient is φ = 194141728.

The previous prime is 194141719. The next prime is 194141767. The reversal of 194141729 is 927141491.

It is an a-pointer prime, because the next prime (194141767) can be obtained adding 194141729 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162613504 + 31528225 = 12752^2 + 5615^2 .

It is a cyclic number.

It is not a de Polignac number, because 194141729 - 2²⁴ = 177364513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194141692 and 194141701.

It is not a weakly prime, because it can be changed into another prime (194141719) 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, 97070864 + 97070865.

It is an arithmetic number, because the mean of its divisors is an integer number (97070865).

Almost surely, 2^194141729 is an apocalyptic number.

It is an amenable number.

194141729 is a deficient number, since it is larger than the sum of its proper divisors (1).

194141729 is an equidigital number, since it uses as much as digits as its factorization.

194141729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 194141729 is about 13933.4751228830. The cubic root of 194141729 is about 579.0369760114.

The spelling of 194141729 in words is "one hundred ninety-four million, one hundred forty-one thousand, seven hundred twenty-nine".