189867244 has 12 divisors (see below), whose sum is σ = 379734544. Its totient is φ = 81371664.

The previous prime is 189867241. The next prime is 189867259. The reversal of 189867244 is 442768981.

It is a happy number.

189867244 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (189867241) by changing a digit.

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, 3390459 + ... + 3390514.

Almost surely, 2^189867244 is an apocalyptic number.

189867244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189867244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189867244 is a wasteful number, since it uses less digits than its factorization.

189867244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780984 (or 6780982 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 189867244 is about 13779.2323443652. The cubic root of 189867244 is about 574.7557818589.

The spelling of 189867244 in words is "one hundred eighty-nine million, eight hundred sixty-seven thousand, two hundred forty-four".