194064529 has 2 divisors, whose sum is σ = 194064530. Its totient is φ = 194064528.

The previous prime is 194064517. The next prime is 194064569. The reversal of 194064529 is 925460491.

It is an a-pointer prime, because the next prime (194064569) can be obtained adding 194064529 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165173904 + 28890625 = 12852^2 + 5375^2 .

It is a cyclic number.

It is not a de Polignac number, because 194064529 - 2¹¹ = 194062481 is a prime.

It is a super-2 number, since 2×194064529² = 75322082831983682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 194064491 and 194064500.

It is not a weakly prime, because it can be changed into another prime (194064569) 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, 97032264 + 97032265.

It is an arithmetic number, because the mean of its divisors is an integer number (97032265).

Almost surely, 2^194064529 is an apocalyptic number.

It is an amenable number.

194064529 is a deficient number, since it is larger than the sum of its proper divisors (1).

194064529 is an equidigital number, since it uses as much as digits as its factorization.

194064529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 194064529 is about 13930.7045406900. The cubic root of 194064529 is about 578.9602149405.

The spelling of 194064529 in words is "one hundred ninety-four million, sixty-four thousand, five hundred twenty-nine".