189747323 has 4 divisors (see below), whose sum is σ = 189977040. Its totient is φ = 189517608.

The previous prime is 189747317. The next prime is 189747361. The reversal of 189747323 is 323747981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323747981 = 613 ⋅528137.

It is a cyclic number.

It is not a de Polignac number, because 189747323 - 2⁸ = 189747067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189747023) 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, 113615 + ... + 115272.

It is an arithmetic number, because the mean of its divisors is an integer number (47494260).

Almost surely, 2^189747323 is an apocalyptic number.

189747323 is a deficient number, since it is larger than the sum of its proper divisors (229717).

189747323 is an equidigital number, since it uses as much as digits as its factorization.

189747323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229716.

The product of its digits is 254016, while the sum is 44.

The square root of 189747323 is about 13774.8801446691. The cubic root of 189747323 is about 574.6347502669.

The spelling of 189747323 in words is "one hundred eighty-nine million, seven hundred forty-seven thousand, three hundred twenty-three".