189665708743 has 8 divisors (see below), whose sum is σ = 219372386688. Its totient is φ = 160611924984.

The previous prime is 189665708707. The next prime is 189665708747. The reversal of 189665708743 is 347807566981.

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

It is not a de Polignac number, because 189665708743 - 2²⁹ = 189128837831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189665708747) 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, 163222921 + ... + 163224082.

It is an arithmetic number, because the mean of its divisors is an integer number (27421548336).

Almost surely, 2^189665708743 is an apocalyptic number.

189665708743 is a deficient number, since it is larger than the sum of its proper divisors (29706677945).

189665708743 is an equidigital number, since it uses as much as digits as its factorization.

189665708743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326447093.

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 189665708743 in words is "one hundred eighty-nine billion, six hundred sixty-five million, seven hundred eight thousand, seven hundred forty-three".