19789148 has 6 divisors (see below), whose sum is σ = 34631016. Its totient is φ = 9894572.

The previous prime is 19789141. The next prime is 19789151. The reversal of 19789148 is 84198791.

It is a super-2 number, since 2×19789148² = 783220757131808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19789141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2473640 + ... + 2473647.

It is an arithmetic number, because the mean of its divisors is an integer number (5771836).

Almost surely, 2^19789148 is an apocalyptic number.

It is an amenable number.

19789148 is a deficient number, since it is larger than the sum of its proper divisors (14841868).

19789148 is a wasteful number, since it uses less digits than its factorization.

19789148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947291 (or 4947289 counting only the distinct ones).

The product of its digits is 145152, while the sum is 47.

The square root of 19789148 is about 4448.4995223109. The cubic root of 19789148 is about 270.4844890502.

The spelling of 19789148 in words is "nineteen million, seven hundred eighty-nine thousand, one hundred forty-eight".