189943093 has 4 divisors (see below), whose sum is σ = 192231648. Its totient is φ = 187654540.

The previous prime is 189943079. The next prime is 189943109. The reversal of 189943093 is 390349981.

189943093 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189943093 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 (189943003) 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, 1144153 + ... + 1144318.

It is an arithmetic number, because the mean of its divisors is an integer number (48057912).

Almost surely, 2^189943093 is an apocalyptic number.

It is an amenable number.

189943093 is a deficient number, since it is larger than the sum of its proper divisors (2288555).

189943093 is an equidigital number, since it uses as much as digits as its factorization.

189943093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288554.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 189943093 is about 13781.9843636539. The cubic root of 189943093 is about 574.8323069904.

The spelling of 189943093 in words is "one hundred eighty-nine million, nine hundred forty-three thousand, ninety-three".