19623041 has 2 divisors, whose sum is σ = 19623042. Its totient is φ = 19623040.

The previous prime is 19623013. The next prime is 19623113. The reversal of 19623041 is 14032691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16032016 + 3591025 = 4004^2 + 1895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19623041 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19623041.

It is not a weakly prime, because it can be changed into another prime (19623011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9811520 + 9811521.

It is an arithmetic number, because the mean of its divisors is an integer number (9811521).

Almost surely, 2^19623041 is an apocalyptic number.

It is an amenable number.

19623041 is a deficient number, since it is larger than the sum of its proper divisors (1).

19623041 is an equidigital number, since it uses as much as digits as its factorization.

19623041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 19623041 is about 4429.7901756178. The cubic root of 19623041 is about 269.7255601908.

The spelling of 19623041 in words is "nineteen million, six hundred twenty-three thousand, forty-one".