191059459 has 12 divisors (see below), whose sum is σ = 210250600. Its totient is φ = 173124864.

The previous prime is 191059457. The next prime is 191059471. The reversal of 191059459 is 954950191.

It is not a de Polignac number, because 191059459 - 2¹ = 191059457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191059457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 547 + ... + 19555.

Almost surely, 2^191059459 is an apocalyptic number.

191059459 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

191059459 is a deficient number, since it is larger than the sum of its proper divisors (19191141).

191059459 is a wasteful number, since it uses less digits than its factorization.

191059459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19074 (or 19051 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 43.

The square root of 191059459 is about 13822.4259448188. The cubic root of 191059459 is about 575.9562754152.

The spelling of 191059459 in words is "one hundred ninety-one million, fifty-nine thousand, four hundred fifty-nine".