189565738 has 8 divisors (see below), whose sum is σ = 284505732. Its totient is φ = 94730496.

The previous prime is 189565723. The next prime is 189565741. The reversal of 189565738 is 837565981.

It can be written as a sum of positive squares in 2 ways, for example, as 185041609 + 4524129 = 13603^2 + 2127^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21495 + ... + 29002.

Almost surely, 2^189565738 is an apocalyptic number.

189565738 is a deficient number, since it is larger than the sum of its proper divisors (94939994).

189565738 is a wasteful number, since it uses less digits than its factorization.

189565738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52376.

The product of its digits is 1814400, while the sum is 52.

The square root of 189565738 is about 13768.2874025784. The cubic root of 189565738 is about 574.4513864955.

The spelling of 189565738 in words is "one hundred eighty-nine million, five hundred sixty-five thousand, seven hundred thirty-eight".