19541941 has 2 divisors, whose sum is σ = 19541942. Its totient is φ = 19541940.

The previous prime is 19541939. The next prime is 19541981. The reversal of 19541941 is 14914591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18309841 + 1232100 = 4279^2 + 1110^2 .

It is an emirp because it is prime and its reverse (14914591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19541941 - 2¹ = 19541939 is a prime.

Together with 19541939, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 19541897 and 19541906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19541981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9770970 + 9770971.

It is an arithmetic number, because the mean of its divisors is an integer number (9770971).

Almost surely, 2^19541941 is an apocalyptic number.

It is an amenable number.

19541941 is a deficient number, since it is larger than the sum of its proper divisors (1).

19541941 is an equidigital number, since it uses as much as digits as its factorization.

19541941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 19541941 is about 4420.6267655164. The cubic root of 19541941 is about 269.3534644885.

The spelling of 19541941 in words is "nineteen million, five hundred forty-one thousand, nine hundred forty-one".