19938741 has 4 divisors (see below), whose sum is σ = 26584992. Its totient is φ = 13292492.

The previous prime is 19938727. The next prime is 19938757. The reversal of 19938741 is 14783991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19938741 - 2⁷ = 19938613 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19938693 and 19938702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19938761) by changing a digit.

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, 3323121 + ... + 3323126.

It is an arithmetic number, because the mean of its divisors is an integer number (6646248).

Almost surely, 2^19938741 is an apocalyptic number.

It is an amenable number.

19938741 is a deficient number, since it is larger than the sum of its proper divisors (6646251).

19938741 is an equidigital number, since it uses as much as digits as its factorization.

19938741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6646250.

The product of its digits is 54432, while the sum is 42.

The square root of 19938741 is about 4465.2817380318. The cubic root of 19938741 is about 271.1643407096.

The spelling of 19938741 in words is "nineteen million, nine hundred thirty-eight thousand, seven hundred forty-one".