189536306 has 8 divisors (see below), whose sum is σ = 284429340. Its totient is φ = 94726528.

The previous prime is 189536279. The next prime is 189536323. The reversal of 189536306 is 603635981.

It can be written as a sum of positive squares in 2 ways, for example, as 128618281 + 60918025 = 11341^2 + 7805^2 .

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

It is a super-2 number, since 2×189536306² = 71848022584251272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14771 + ... + 24438.

Almost surely, 2^189536306 is an apocalyptic number.

189536306 is a deficient number, since it is larger than the sum of its proper divisors (94893034).

189536306 is a wasteful number, since it uses less digits than its factorization.

189536306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41628.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 189536306 is about 13767.2185280833. The cubic root of 189536306 is about 574.4216551589.

The spelling of 189536306 in words is "one hundred eighty-nine million, five hundred thirty-six thousand, three hundred six".