19748313 has 16 divisors (see below), whose sum is σ = 31507840. Its totient is φ = 12152592.

The previous prime is 19748291. The next prime is 19748321. The reversal of 19748313 is 31384791.

It is a happy number.

It is not a de Polignac number, because 19748313 - 2⁶ = 19748249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19748213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27781 + ... + 28482.

It is an arithmetic number, because the mean of its divisors is an integer number (1969240).

Almost surely, 2^19748313 is an apocalyptic number.

19748313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19748313 is a deficient number, since it is larger than the sum of its proper divisors (11759527).

19748313 is a wasteful number, since it uses less digits than its factorization.

19748313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56285 (or 56279 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 19748313 is about 4443.9074022756. The cubic root of 19748313 is about 270.2983122606.

The spelling of 19748313 in words is "nineteen million, seven hundred forty-eight thousand, three hundred thirteen".