19748673 has 12 divisors (see below), whose sum is σ = 32601088. Its totient is φ = 11284920.

The previous prime is 19748647. The next prime is 19748683. The reversal of 19748673 is 37684791.

It is not a de Polignac number, because 19748673 - 2¹⁰ = 19747649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19748633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156673 + ... + 156798.

Almost surely, 2^19748673 is an apocalyptic number.

It is an amenable number.

19748673 is a deficient number, since it is larger than the sum of its proper divisors (12852415).

19748673 is a wasteful number, since it uses less digits than its factorization.

19748673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313484 (or 313481 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 19748673 is about 4443.9479069854. The cubic root of 19748673 is about 270.2999547097.

The spelling of 19748673 in words is "nineteen million, seven hundred forty-eight thousand, six hundred seventy-three".