191050947 has 48 divisors (see below), whose sum is σ = 316565280. Its totient is φ = 113467392.

The previous prime is 191050933. The next prime is 191050957. The reversal of 191050947 is 749050191.

191050947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 191050947 - 2¹⁰ = 191049923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (191050907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165123 + ... + 166275.

It is an arithmetic number, because the mean of its divisors is an integer number (6595110).

Almost surely, 2^191050947 is an apocalyptic number.

191050947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

191050947 is a deficient number, since it is larger than the sum of its proper divisors (125514333).

191050947 is a wasteful number, since it uses less digits than its factorization.

191050947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 191050947 is about 13822.1180359596. The cubic root of 191050947 is about 575.9477220349.

The spelling of 191050947 in words is "one hundred ninety-one million, fifty thousand, nine hundred forty-seven".