189017442859 has 8 divisors (see below), whose sum is σ = 216788691168. Its totient is φ = 161438383680.

The previous prime is 189017442839. The next prime is 189017442863. The reversal of 189017442859 is 958244710981.

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

It is not a de Polignac number, because 189017442859 - 2¹⁷ = 189017311787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189017442839) 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, 48045172 + ... + 48049105.

It is an arithmetic number, because the mean of its divisors is an integer number (27098586396).

Almost surely, 2^189017442859 is an apocalyptic number.

189017442859 is a deficient number, since it is larger than the sum of its proper divisors (27771248309).

189017442859 is an equidigital number, since it uses as much as digits as its factorization.

189017442859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96094565.

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 189017442859 in words is "one hundred eighty-nine billion, seventeen million, four hundred forty-two thousand, eight hundred fifty-nine".