189806284 has 6 divisors (see below), whose sum is σ = 332161004. Its totient is φ = 94903140.

The previous prime is 189806251. The next prime is 189806291. The reversal of 189806284 is 482608981.

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 as a sum of consecutive naturals, namely, 23725782 + ... + 23725789.

Almost surely, 2^189806284 is an apocalyptic number.

It is an amenable number.

189806284 is a deficient number, since it is larger than the sum of its proper divisors (142354720).

189806284 is a wasteful number, since it uses less digits than its factorization.

189806284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47451575 (or 47451573 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 189806284 is about 13777.0201422514. The cubic root of 189806284 is about 574.6942636771.

The spelling of 189806284 in words is "one hundred eighty-nine million, eight hundred six thousand, two hundred eighty-four".