791950189 has 2 divisors, whose sum is σ = 791950190. Its totient is φ = 791950188.

The previous prime is 791950169. The next prime is 791950193. The reversal of 791950189 is 981059197.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452285289 + 339664900 = 21267^2 + 18430^2 .

It is an emirp because it is prime and its reverse (981059197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 791950189 - 2⁵ = 791950157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791950139) 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, 395975094 + 395975095.

It is an arithmetic number, because the mean of its divisors is an integer number (395975095).

Almost surely, 2^791950189 is an apocalyptic number.

It is an amenable number.

791950189 is a deficient number, since it is larger than the sum of its proper divisors (1).

791950189 is an equidigital number, since it uses as much as digits as its factorization.

791950189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 49.

The square root of 791950189 is about 28141.6095666186. The cubic root of 791950189 is about 925.1936050558.

The spelling of 791950189 in words is "seven hundred ninety-one million, nine hundred fifty thousand, one hundred eighty-nine".