189592643 has 4 divisors (see below), whose sum is σ = 191270568. Its totient is φ = 187914720.

The previous prime is 189592631. The next prime is 189592661. The reversal of 189592643 is 346295981.

189592643 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.

It is a cyclic number.

It is not a de Polignac number, because 189592643 - 2¹⁴ = 189576259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189592943) 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, 838793 + ... + 839018.

It is an arithmetic number, because the mean of its divisors is an integer number (47817642).

Almost surely, 2^189592643 is an apocalyptic number.

189592643 is a deficient number, since it is larger than the sum of its proper divisors (1677925).

189592643 is a wasteful number, since it uses less digits than its factorization.

189592643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677924.

The product of its digits is 466560, while the sum is 47.

The square root of 189592643 is about 13769.2644320603. The cubic root of 189592643 is about 574.4785624390.

The spelling of 189592643 in words is "one hundred eighty-nine million, five hundred ninety-two thousand, six hundred forty-three".