191500300247 has 2 divisors, whose sum is σ = 191500300248. Its totient is φ = 191500300246.

The previous prime is 191500300177. The next prime is 191500300283. The reversal of 191500300247 is 742003005191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 191500300247 - 2¹⁶ = 191500234711 is a prime.

It is a super-2 number, since 2×191500300247² (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 (191500330247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95750150123 + 95750150124.

It is an arithmetic number, because the mean of its divisors is an integer number (95750150124).

Almost surely, 2^191500300247 is an apocalyptic number.

191500300247 is a deficient number, since it is larger than the sum of its proper divisors (1).

191500300247 is an equidigital number, since it uses as much as digits as its factorization.

191500300247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The spelling of 191500300247 in words is "one hundred ninety-one billion, five hundred million, three hundred thousand, two hundred forty-seven".