19965041 has 2 divisors, whose sum is σ = 19965042. Its totient is φ = 19965040.

The previous prime is 19965019. The next prime is 19965053. The reversal of 19965041 is 14056991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19891600 + 73441 = 4460^2 + 271^2 .

It is a cyclic number.

It is not a de Polignac number, because 19965041 - 2²² = 15770737 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19964992 and 19965010.

It is not a weakly prime, because it can be changed into another prime (19965091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9982520 + 9982521.

It is an arithmetic number, because the mean of its divisors is an integer number (9982521).

Almost surely, 2^19965041 is an apocalyptic number.

It is an amenable number.

19965041 is a deficient number, since it is larger than the sum of its proper divisors (1).

19965041 is an equidigital number, since it uses as much as digits as its factorization.

19965041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 19965041 is about 4468.2257105030. The cubic root of 19965041 is about 271.2835138781.

The spelling of 19965041 in words is "nineteen million, nine hundred sixty-five thousand, forty-one".