191430982389 has 8 divisors (see below), whose sum is σ = 256300403392. Its totient is φ = 127091108160.

The previous prime is 191430982387. The next prime is 191430982409. The reversal of 191430982389 is 983289034191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 191430982389 - 2¹ = 191430982387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191430982387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132385849 + ... + 132387294.

It is an arithmetic number, because the mean of its divisors is an integer number (32037550424).

Almost surely, 2^191430982389 is an apocalyptic number.

It is an amenable number.

191430982389 is a deficient number, since it is larger than the sum of its proper divisors (64869421003).

191430982389 is a wasteful number, since it uses less digits than its factorization.

191430982389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264773387.

The product of its (nonzero) digits is 3359232, while the sum is 57.

The spelling of 191430982389 in words is "one hundred ninety-one billion, four hundred thirty million, nine hundred eighty-two thousand, three hundred eighty-nine".