19748449 has 8 divisors (see below), whose sum is σ = 23348160. Its totient is φ = 16343376.

The previous prime is 19748419. The next prime is 19748461. The reversal of 19748449 is 94484791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19748449 - 2⁷ = 19748321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19748399 and 19748408.

It is not an unprimeable number, because it can be changed into a prime (19748419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48439 + ... + 48844.

It is an arithmetic number, because the mean of its divisors is an integer number (2918520).

Almost surely, 2^19748449 is an apocalyptic number.

It is an amenable number.

19748449 is a deficient number, since it is larger than the sum of its proper divisors (3599711).

19748449 is an equidigital number, since it uses as much as digits as its factorization.

19748449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97319.

The product of its digits is 290304, while the sum is 46.

The square root of 19748449 is about 4443.9227040983. The cubic root of 19748449 is about 270.2989327437.

The spelling of 19748449 in words is "nineteen million, seven hundred forty-eight thousand, four hundred forty-nine".