189674345 has 12 divisors (see below), whose sum is σ = 264770244. Its totient is φ = 130062240.

The previous prime is 189674327. The next prime is 189674347. The reversal of 189674345 is 543476981.

It can be written as a sum of positive squares in 2 ways, for example, as 28079401 + 161594944 = 5299^2 + 12712^2 .

It is not a de Polignac number, because 189674345 - 2¹⁰ = 189673321 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189674345.

It is not an unprimeable number, because it can be changed into a prime (189674347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386846 + ... + 387335.

It is an arithmetic number, because the mean of its divisors is an integer number (22064187).

Almost surely, 2^189674345 is an apocalyptic number.

It is an amenable number.

189674345 is a deficient number, since it is larger than the sum of its proper divisors (75095899).

189674345 is an equidigital number, since it uses as much as digits as its factorization.

189674345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774200 (or 774193 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 189674345 is about 13772.2309376513. The cubic root of 189674345 is about 574.5610714546.

The spelling of 189674345 in words is "one hundred eighty-nine million, six hundred seventy-four thousand, three hundred forty-five".