191928747047 has 2 divisors, whose sum is σ = 191928747048. Its totient is φ = 191928747046.

The previous prime is 191928747029. The next prime is 191928747077. The reversal of 191928747047 is 740747829191.

191928747047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 191928747047 - 2¹⁴ = 191928730663 is a prime.

It is a super-2 number, since 2×191928747047² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191928747077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95964373523 + 95964373524.

It is an arithmetic number, because the mean of its divisors is an integer number (95964373524).

Almost surely, 2^191928747047 is an apocalyptic number.

191928747047 is a deficient number, since it is larger than the sum of its proper divisors (1).

191928747047 is an equidigital number, since it uses as much as digits as its factorization.

191928747047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7112448, while the sum is 59.

The spelling of 191928747047 in words is "one hundred ninety-one billion, nine hundred twenty-eight million, seven hundred forty-seven thousand, forty-seven".