189012347 has 4 divisors (see below), whose sum is σ = 189860160. Its totient is φ = 188164536.

The previous prime is 189012283. The next prime is 189012349. The reversal of 189012347 is 743210981.

189012347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743210981 = 17 ⋅43718293.

It is a cyclic number.

It is not a de Polignac number, because 189012347 - 2⁶ = 189012283 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189012349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423572 + ... + 424017.

It is an arithmetic number, because the mean of its divisors is an integer number (47465040).

Almost surely, 2^189012347 is an apocalyptic number.

189012347 is a deficient number, since it is larger than the sum of its proper divisors (847813).

189012347 is an equidigital number, since it uses as much as digits as its factorization.

189012347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847812.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 189012347 is about 13748.1761335822. The cubic root of 189012347 is about 573.8918513645.

The spelling of 189012347 in words is "one hundred eighty-nine million, twelve thousand, three hundred forty-seven".