189920343 has 8 divisors (see below), whose sum is σ = 255468528. Its totient is φ = 125492864.

The previous prime is 189920329. The next prime is 189920347. The reversal of 189920343 is 343029981.

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

It is a cyclic number.

It is not a de Polignac number, because 189920343 - 2²² = 185726039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189920347) 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, 279780 + ... + 280457.

It is an arithmetic number, because the mean of its divisors is an integer number (31933566).

Almost surely, 2^189920343 is an apocalyptic number.

189920343 is a deficient number, since it is larger than the sum of its proper divisors (65548185).

189920343 is a wasteful number, since it uses less digits than its factorization.

189920343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560353.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 189920343 is about 13781.1589860940. The cubic root of 189920343 is about 574.8093563320.

The spelling of 189920343 in words is "one hundred eighty-nine million, nine hundred twenty thousand, three hundred forty-three".