19745148 has 12 divisors (see below), whose sum is σ = 46072040. Its totient is φ = 6581712.

The previous prime is 19745111. The next prime is 19745153. The reversal of 19745148 is 84154791.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 822703 + ... + 822726.

Almost surely, 2^19745148 is an apocalyptic number.

It is an amenable number.

19745148 is an abundant number, since it is smaller than the sum of its proper divisors (26326892).

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

19745148 is a wasteful number, since it uses less digits than its factorization.

19745148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645436 (or 1645434 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 19745148 is about 4443.5512824767. The cubic root of 19745148 is about 270.2838715357.

The spelling of 19745148 in words is "nineteen million, seven hundred forty-five thousand, one hundred forty-eight".