19989148 has 6 divisors (see below), whose sum is σ = 34981016. Its totient is φ = 9994572.

The previous prime is 19989131. The next prime is 19989157. The reversal of 19989148 is 84198991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2498640 + ... + 2498647.

Almost surely, 2^19989148 is an apocalyptic number.

It is an amenable number.

19989148 is a deficient number, since it is larger than the sum of its proper divisors (14991868).

19989148 is a wasteful number, since it uses less digits than its factorization.

19989148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4997291 (or 4997289 counting only the distinct ones).

The product of its digits is 186624, while the sum is 49.

The square root of 19989148 is about 4470.9224998875. The cubic root of 19989148 is about 271.3926580106.

The spelling of 19989148 in words is "nineteen million, nine hundred eighty-nine thousand, one hundred forty-eight".