190389317 has 2 divisors, whose sum is σ = 190389318. Its totient is φ = 190389316.

The previous prime is 190389313. The next prime is 190389359. The reversal of 190389317 is 713983091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175536001 + 14853316 = 13249^2 + 3854^2 .

It is a cyclic number.

It is not a de Polignac number, because 190389317 - 2² = 190389313 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190389313) 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, 95194658 + 95194659.

It is an arithmetic number, because the mean of its divisors is an integer number (95194659).

Almost surely, 2^190389317 is an apocalyptic number.

It is an amenable number.

190389317 is a deficient number, since it is larger than the sum of its proper divisors (1).

190389317 is an equidigital number, since it uses as much as digits as its factorization.

190389317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 190389317 is about 13798.1635372248. The cubic root of 190389317 is about 575.2820967405.

The spelling of 190389317 in words is "one hundred ninety million, three hundred eighty-nine thousand, three hundred seventeen".