189834388 has 12 divisors (see below), whose sum is σ = 337841280. Its totient is φ = 93308312.

The previous prime is 189834361. The next prime is 189834389. The reversal of 189834388 is 883438981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189834389) by changing a digit.

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, 401956 + ... + 402427.

It is an arithmetic number, because the mean of its divisors is an integer number (28153440).

Almost surely, 2^189834388 is an apocalyptic number.

It is an amenable number.

189834388 is a deficient number, since it is larger than the sum of its proper divisors (148006892).

189834388 is a wasteful number, since it uses less digits than its factorization.

189834388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804446 (or 804444 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 52.

The square root of 189834388 is about 13778.0400638117. The cubic root of 189834388 is about 574.7226266483.

The spelling of 189834388 in words is "one hundred eighty-nine million, eight hundred thirty-four thousand, three hundred eighty-eight".