191129004887 has 2 divisors, whose sum is σ = 191129004888. Its totient is φ = 191129004886.

The previous prime is 191129004841. The next prime is 191129004977. The reversal of 191129004887 is 788400921191.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191129004887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191129004817) 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, 95564502443 + 95564502444.

It is an arithmetic number, because the mean of its divisors is an integer number (95564502444).

Almost surely, 2^191129004887 is an apocalyptic number.

191129004887 is a deficient number, since it is larger than the sum of its proper divisors (1).

191129004887 is an equidigital number, since it uses as much as digits as its factorization.

191129004887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 191129004887 in words is "one hundred ninety-one billion, one hundred twenty-nine million, four thousand, eight hundred eighty-seven".