189688461 has 8 divisors (see below), whose sum is σ = 253249920. Its totient is φ = 126292992.

The previous prime is 189688451. The next prime is 189688469. The reversal of 189688461 is 164886981.

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

It is not a de Polignac number, because 189688461 - 2¹⁸ = 189426317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189688469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38805 + ... + 43418.

It is an arithmetic number, because the mean of its divisors is an integer number (31656240).

Almost surely, 2^189688461 is an apocalyptic number.

It is an amenable number.

189688461 is a deficient number, since it is larger than the sum of its proper divisors (63561459).

189688461 is an equidigital number, since it uses as much as digits as its factorization.

189688461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82995.

The product of its digits is 663552, while the sum is 51.

The square root of 189688461 is about 13772.7434086314. The cubic root of 189688461 is about 574.5753244855.

The spelling of 189688461 in words is "one hundred eighty-nine million, six hundred eighty-eight thousand, four hundred sixty-one".