190020329 has 2 divisors, whose sum is σ = 190020330. Its totient is φ = 190020328.

The previous prime is 190020301. The next prime is 190020331. The reversal of 190020329 is 923020091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142754704 + 47265625 = 11948^2 + 6875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190020329 is a prime.

It is a super-2 number, since 2×190020329² = 72215450866536482, which contains 22 as substring.

Together with 190020331, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 190020298 and 190020307.

It is not a weakly prime, because it can be changed into another prime (190020629) 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, 95010164 + 95010165.

It is an arithmetic number, because the mean of its divisors is an integer number (95010165).

Almost surely, 2^190020329 is an apocalyptic number.

It is an amenable number.

190020329 is a deficient number, since it is larger than the sum of its proper divisors (1).

190020329 is an equidigital number, since it uses as much as digits as its factorization.

190020329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 190020329 is about 13784.7861427009. The cubic root of 190020329 is about 574.9102105543.

The spelling of 190020329 in words is "one hundred ninety million, twenty thousand, three hundred twenty-nine".