19788341 has 4 divisors (see below), whose sum is σ = 19856172. Its totient is φ = 19720512.

The previous prime is 19788337. The next prime is 19788343. The reversal of 19788341 is 14388791.

19788341 = 3145² + 3146².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14388791 = 103 ⋅139697.

It can be written as a sum of positive squares in 2 ways, for example, as 9897316 + 9891025 = 3146^2 + 3145^2 .

It is a cyclic number.

It is not a de Polignac number, because 19788341 - 2² = 19788337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19788343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33476 + ... + 34061.

It is an arithmetic number, because the mean of its divisors is an integer number (4964043).

Almost surely, 2^19788341 is an apocalyptic number.

19788341 is the 3146-th centered square number.

It is an amenable number.

19788341 is a deficient number, since it is larger than the sum of its proper divisors (67831).

19788341 is an equidigital number, since it uses as much as digits as its factorization.

19788341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67830.

The product of its digits is 48384, while the sum is 41.

The square root of 19788341 is about 4448.4088166444. The cubic root of 19788341 is about 270.4808122210.

The spelling of 19788341 in words is "nineteen million, seven hundred eighty-eight thousand, three hundred forty-one".