189384723 has 84 divisors (see below), whose sum is σ = 331441320. Its totient is φ = 107775360.

The previous prime is 189384721. The next prime is 189384731. The reversal of 189384723 is 327483981.

It is not a de Polignac number, because 189384723 - 2¹ = 189384721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189384721) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1675915 + ... + 1676027.

It is an arithmetic number, because the mean of its divisors is an integer number (3945730).

Almost surely, 2^189384723 is an apocalyptic number.

189384723 is a deficient number, since it is larger than the sum of its proper divisors (142056597).

189384723 is a wasteful number, since it uses less digits than its factorization.

189384723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 146 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 189384723 is about 13761.7122117853. The cubic root of 189384723 is about 574.2684817252.

The spelling of 189384723 in words is "one hundred eighty-nine million, three hundred eighty-four thousand, seven hundred twenty-three".