191000040989 has 8 divisors (see below), whose sum is σ = 191668619520. Its totient is φ = 190331576656.

The previous prime is 191000040919. The next prime is 191000041009. The reversal of 191000040989 is 989040000191.

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

It is a cyclic number.

It is not a de Polignac number, because 191000040989 - 2²⁰ = 190998992413 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 (191000040919) 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, 4655564 + ... + 4696410.

It is an arithmetic number, because the mean of its divisors is an integer number (23958577440).

Almost surely, 2^191000040989 is an apocalyptic number.

It is an amenable number.

191000040989 is a deficient number, since it is larger than the sum of its proper divisors (668578531).

191000040989 is a wasteful number, since it uses less digits than its factorization.

191000040989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57099.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 191000040989 in words is "one hundred ninety-one billion, forty thousand, nine hundred eighty-nine".