189891124 has 6 divisors (see below), whose sum is σ = 332309474. Its totient is φ = 94945560.

The previous prime is 189891077. The next prime is 189891137. The reversal of 189891124 is 421198981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 158306724 + 31584400 = 12582^2 + 5620^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 23736387 + ... + 23736394.

Almost surely, 2^189891124 is an apocalyptic number.

It is an amenable number.

189891124 is a deficient number, since it is larger than the sum of its proper divisors (142418350).

189891124 is a wasteful number, since it uses less digits than its factorization.

189891124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47472785 (or 47472783 counting only the distinct ones).

The product of its digits is 41472, while the sum is 43.

The square root of 189891124 is about 13780.0988385425. The cubic root of 189891124 is about 574.7798769273.

The spelling of 189891124 in words is "one hundred eighty-nine million, eight hundred ninety-one thousand, one hundred twenty-four".