189064247 has 4 divisors (see below), whose sum is σ = 190444416. Its totient is φ = 187684080.

The previous prime is 189064237. The next prime is 189064279. The reversal of 189064247 is 742460981.

189064247 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: 742460981 = 37 ⋅20066513.

It is a cyclic number.

It is not a de Polignac number, because 189064247 - 2¹⁴ = 189047863 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 (189064217) 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, 689879 + ... + 690152.

It is an arithmetic number, because the mean of its divisors is an integer number (47611104).

Almost surely, 2^189064247 is an apocalyptic number.

189064247 is a deficient number, since it is larger than the sum of its proper divisors (1380169).

189064247 is a wasteful number, since it uses less digits than its factorization.

189064247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380168.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 189064247 is about 13750.0635271260. The cubic root of 189064247 is about 573.9443739674.

The spelling of 189064247 in words is "one hundred eighty-nine million, sixty-four thousand, two hundred forty-seven".