190647329 has 2 divisors, whose sum is σ = 190647330. Its totient is φ = 190647328.

The previous prime is 190647323. The next prime is 190647343. The reversal of 190647329 is 923746091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145757329 + 44890000 = 12073^2 + 6700^2 .

It is a cyclic number.

It is not a de Polignac number, because 190647329 - 2²⁰ = 189598753 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (190647323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95323664 + 95323665.

It is an arithmetic number, because the mean of its divisors is an integer number (95323665).

Almost surely, 2^190647329 is an apocalyptic number.

It is an amenable number.

190647329 is a deficient number, since it is larger than the sum of its proper divisors (1).

190647329 is an equidigital number, since it uses as much as digits as its factorization.

190647329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 190647329 is about 13807.5098768750. The cubic root of 190647329 is about 575.5418499091.

The spelling of 190647329 in words is "one hundred ninety million, six hundred forty-seven thousand, three hundred twenty-nine".